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12102202031 = 23631833887
BaseRepresentation
bin10110100010101100…
…01111001010101111
31011020102102120011212
423101112033022233
5144241130431111
65320520105035
7605622006563
oct132126171257
934212376155
1012102202031
115150417567
12241900517b
1311ab3996ba
1482b4236a3
154ac70c98b
hex2d158f2af

12102202031 has 8 divisors (see below), whose sum is σ = 12648413184. Its totient is φ = 11557659960.

The previous prime is 12102202009. The next prime is 12102202039. The reversal of 12102202031 is 13020220121.

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 12102202031 - 214 = 12102185647 is a prime.

It is a super-2 number, since 2×121022020312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12102201997 and 12102202015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102202039) 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 7 ways as a sum of consecutive naturals, for example, 402431 + ... + 431456.

It is an arithmetic number, because the mean of its divisors is an integer number (1581051648).

Almost surely, 212102202031 is an apocalyptic number.

12102202031 is a deficient number, since it is larger than the sum of its proper divisors (546211153).

12102202031 is an equidigital number, since it uses as much as digits as its factorization.

12102202031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834541.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12102202031 its reverse (13020220121), we get a palindrome (25122422152).

The spelling of 12102202031 in words is "twelve billion, one hundred two million, two hundred two thousand, thirty-one".

Divisors: 1 23 631 14513 833887 19179401 526182697 12102202031