1021212122312 has 32 divisors (see below), whose sum is σ = 1974874158720. Its totient is φ = 494794142400.

The previous prime is 1021212122279. The next prime is 1021212122323. The reversal of 1021212122312 is 2132212121201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13407518 + ... + 13483469.

It is an arithmetic number, because the mean of its divisors is an integer number (61714817460).

Almost surely, 2^{1021212122312} is an apocalyptic number.

It is an amenable number.

1021212122312 is a deficient number, since it is larger than the sum of its proper divisors (953662036408).

1021212122312 is a wasteful number, since it uses less digits than its factorization.

1021212122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26891141 (or 26891137 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1021212122312 its reverse (2132212121201), we get a palindrome (3153424243513).

The spelling of 1021212122312 in words is "one trillion, twenty-one billion, two hundred twelve million, one hundred twenty-two thousand, three hundred twelve".