2151100022520 has 64 divisors (see below), whose sum is σ = 6481480500000. Its totient is φ = 571121745408.

The previous prime is 2151100022453. The next prime is 2151100022537. The reversal of 2151100022520 is 252200011512.

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, 39111895 + ... + 39166854.

Almost surely, 2^{2151100022520} is an apocalyptic number.

2151100022520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151100022520 is an abundant number, since it is smaller than the sum of its proper divisors (4330380477480).

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

2151100022520 is a wasteful number, since it uses less digits than its factorization.

2151100022520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78278992 (or 78278988 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The spelling of 2151100022520 in words is "two trillion, one hundred fifty-one billion, one hundred million, twenty-two thousand, five hundred twenty".