21021031330092 has 144 divisors (see below), whose sum is σ = 53448213218400. Its totient is φ = 6966053084160.

The previous prime is 21021031330073. The next prime is 21021031330139. The reversal of 21021031330092 is 29003313012012.

21021031330092 is a `hidden beast` number, since 2 + 1 + 0 + 210 + 31 + 330 + 0 + 92 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10062723384 + ... + 10062725472.

It is an arithmetic number, because the mean of its divisors is an integer number (371168147350).

Almost surely, 2^{21021031330092} is an apocalyptic number.

It is an amenable number.

21021031330092 is an abundant number, since it is smaller than the sum of its proper divisors (32427181888308).

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

21021031330092 is a wasteful number, since it uses less digits than its factorization.

21021031330092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336 (or 4331 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 21021031330092 in words is "twenty-one trillion, twenty-one billion, thirty-one million, three hundred thirty thousand, ninety-two".