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212021120023 = 1953239880951
BaseRepresentation
bin1100010101110101110…
…0011000110000010111
3202021021010010212001221
43011131130120300113
511433204401320043
6241222352231211
721214036533106
oct3053534306027
9667233125057
10212021120023
1181a10438639
123511153b507
1316cbb969b4b
14a39483a03d
1557ad9b78ed
hex315d718c17

212021120023 has 16 divisors (see below), whose sum is σ = 228342758400. Its totient is φ = 196247469600.

The previous prime is 212021120021. The next prime is 212021120093. The reversal of 212021120023 is 320021120212.

It is a happy number.

212021120023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212021120023 - 21 = 212021120021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021119979 and 212021120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199803 + ... + 681148.

It is an arithmetic number, because the mean of its divisors is an integer number (14271422400).

Almost surely, 2212021120023 is an apocalyptic number.

212021120023 is a deficient number, since it is larger than the sum of its proper divisors (16321638377).

212021120023 is a wasteful number, since it uses less digits than its factorization.

212021120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881262.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212021120023 its reverse (320021120212), we get a palindrome (532042240235).

The spelling of 212021120023 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, twenty-three".

Divisors: 1 19 53 239 1007 4541 12667 240673 880951 16738069 46690403 210547289 887117657 4000398491 11159006317 212021120023