10121111312 has 40 divisors (see below), whose sum is σ = 21144480000. Its totient is φ = 4665444480.

The previous prime is 10121111269. The next prime is 10121111317. The reversal of 10121111312 is 21311112101.

It is a super-2 number, since 2×10121111312² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10121111317) 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, 138689 + ... + 198687.

It is an arithmetic number, because the mean of its divisors is an integer number (528612000).

Almost surely, 2^10121111312 is an apocalyptic number.

It is an amenable number.

10121111312 is an abundant number, since it is smaller than the sum of its proper divisors (11023368688).

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

10121111312 is a wasteful number, since it uses less digits than its factorization.

10121111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60831 (or 60825 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 10121111312 its reverse (21311112101), we get a palindrome (31432223413).

The spelling of 10121111312 in words is "ten billion, one hundred twenty-one million, one hundred eleven thousand, three hundred twelve".