10221221099964 has 48 divisors (see below), whose sum is σ = 27330858318848. Its totient is φ = 2912391523008.

The previous prime is 10221221099923. The next prime is 10221221099989. The reversal of 10221221099964 is 46999012212201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165747379 + ... + 165809034.

Almost surely, 2^{10221221099964} is an apocalyptic number.

10221221099964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10221221099964 is an abundant number, since it is smaller than the sum of its proper divisors (17109637218884).

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

10221221099964 is a wasteful number, since it uses less digits than its factorization.

10221221099964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331556794 (or 331556792 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 10221221099964 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-one million, ninety-nine thousand, nine hundred sixty-four".