10111021312 has 36 divisors (see below), whose sum is σ = 23065771456. Its totient is φ = 4333294080.

The previous prime is 10111021289. The next prime is 10111021331. The reversal of 10111021312 is 21312011101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10111021292 and 10111021301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2819364 + ... + 2822947.

Almost surely, 2^10111021312 is an apocalyptic number.

It is an amenable number.

10111021312 is an abundant number, since it is smaller than the sum of its proper divisors (12954750144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10111021312 is an frugal number, since it uses more digits than its factorization.

10111021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642334 (or 5642320 counting only the distinct ones).

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

Adding to 10111021312 its reverse (21312011101), we get a palindrome (31423032413).

The spelling of 10111021312 in words is "ten billion, one hundred eleven million, twenty-one thousand, three hundred twelve".