1021013211212 has 24 divisors (see below), whose sum is σ = 1836380352576. Its totient is φ = 496437712848.

The previous prime is 1021013211187. The next prime is 1021013211371. The reversal of 1021013211212 is 2121123101201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13036118 + ... + 13114205.

It is an arithmetic number, because the mean of its divisors is an integer number (76515848024).

Almost surely, 2^{1021013211212} is an apocalyptic number.

It is an amenable number.

1021013211212 is a deficient number, since it is larger than the sum of its proper divisors (815367141364).

1021013211212 is a wasteful number, since it uses less digits than its factorization.

1021013211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26150597 (or 26150595 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1021013211212 its reverse (2121123101201), we get a palindrome (3142136312413).

The spelling of 1021013211212 in words is "one trillion, twenty-one billion, thirteen million, two hundred eleven thousand, two hundred twelve".