1021112011212 has 24 divisors (see below), whose sum is σ = 2382688954800. Its totient is φ = 340357204416.

The previous prime is 1021112011207. The next prime is 1021112011217. The reversal of 1021112011212 is 2121102111201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1021112011207) and next prime (1021112011217).

It is a super-2 number, since 2×1021112011212² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021112011191 and 1021112011200.

It is not an unprimeable number, because it can be changed into a prime (1021112011217) 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, 1364887 + ... + 1976142.

It is an arithmetic number, because the mean of its divisors is an integer number (99278706450).

Almost surely, 2^{1021112011212} is an apocalyptic number.

1021112011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021112011212 is an abundant number, since it is smaller than the sum of its proper divisors (1361576943588).

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

1021112011212 is a wasteful number, since it uses less digits than its factorization.

1021112011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366505 (or 3366503 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1021112011212 its reverse (2121102111201), we get a palindrome (3142214122413).

The spelling of 1021112011212 in words is "one trillion, twenty-one billion, one hundred twelve million, eleven thousand, two hundred twelve".