1021212625072 has 40 divisors (see below), whose sum is σ = 1985346795744. Its totient is φ = 508865769984.

The previous prime is 1021212625051. The next prime is 1021212625073. The reversal of 1021212625072 is 2705262121201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1021212625073) 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, 26538198 + ... + 26576650.

Almost surely, 2^{1021212625072} is an apocalyptic number.

It is an amenable number.

1021212625072 is a deficient number, since it is larger than the sum of its proper divisors (964134170672).

1021212625072 is a wasteful number, since it uses less digits than its factorization.

1021212625072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44077 (or 44071 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 1021212625072 its reverse (2705262121201), we get a palindrome (3726474746273).

The spelling of 1021212625072 in words is "one trillion, twenty-one billion, two hundred twelve million, six hundred twenty-five thousand, seventy-two".