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1211121120023 = 23185532838217
BaseRepresentation
bin10001100111111100011…
…100011011001100010111
311021210010010001112122122
4101213330130123030113
5124320334001320043
62324214212450155
7153333465443333
oct21477434331427
94253103045578
101211121120023
114276a7331181
1217688201995b
138a29263bcb9
14428935267c3
1521786202368
hex119fc71b317

1211121120023 has 8 divisors (see below), whose sum is σ = 1263847122528. Its totient is φ = 1158400831104.

The previous prime is 1211121119983. The next prime is 1211121120029. The reversal of 1211121120023 is 3200211211121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211121120023 - 236 = 1142401643287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211121119983 and 1211121120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211121120029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992390 + ... + 1845827.

It is an arithmetic number, because the mean of its divisors is an integer number (157980890316).

Almost surely, 21211121120023 is an apocalyptic number.

1211121120023 is a deficient number, since it is larger than the sum of its proper divisors (52726002505).

1211121120023 is a wasteful number, since it uses less digits than its factorization.

1211121120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856793.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1211121120023 its reverse (3200211211121), we get a palindrome (4411332331144).

The spelling of 1211121120023 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, one hundred twenty thousand, twenty-three".

Divisors: 1 23 18553 426719 2838217 65278991 52657440001 1211121120023