1031021011212 has 48 divisors (see below), whose sum is σ = 2594096534400. Its totient is φ = 317644467840.

The previous prime is 1031021011199. The next prime is 1031021011213. The reversal of 1031021011212 is 2121101201301.

It is a junction number, because it is equal to n+sod(n) for n = 1031021011191 and 1031021011200.

It is not an unprimeable number, because it can be changed into a prime (1031021011213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55137262 + ... + 55155957.

It is an arithmetic number, because the mean of its divisors is an integer number (54043677800).

Almost surely, 2^{1031021011212} is an apocalyptic number.

1031021011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1031021011212 is an abundant number, since it is smaller than the sum of its proper divisors (1563075523188).

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

1031021011212 is a wasteful number, since it uses less digits than its factorization.

1031021011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110293286 (or 110293284 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1031021011212 its reverse (2121101201301), we get a palindrome (3152122212513).

The spelling of 1031021011212 in words is "one trillion, thirty-one billion, twenty-one million, eleven thousand, two hundred twelve".