100012111231 has 8 divisors (see below), whose sum is σ = 100190306000. Its totient is φ = 99834076800.

The previous prime is 100012111201. The next prime is 100012111259. The reversal of 100012111231 is 132111210001.

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 100012111231 - 2²¹ = 100010014079 is a prime.

It is a super-2 number, since 2×100012111231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012111201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244920 + ... + 1322818.

It is an arithmetic number, because the mean of its divisors is an integer number (12523788250).

Almost surely, 2^100012111231 is an apocalyptic number.

100012111231 is a deficient number, since it is larger than the sum of its proper divisors (178194769).

100012111231 is a wasteful number, since it uses less digits than its factorization.

100012111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80169.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 100012111231 its reverse (132111210001), we get a palindrome (232123321232).

The spelling of 100012111231 in words is "one hundred billion, twelve million, one hundred eleven thousand, two hundred thirty-one".