2151212022520 has 64 divisors (see below), whose sum is σ = 5280406588800. Its totient is φ = 782235377280.

The previous prime is 2151212022473. The next prime is 2151212022599. The reversal of 2151212022520 is 252202121512.

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, 22262871 + ... + 22359289.

It is an arithmetic number, because the mean of its divisors is an integer number (82506352950).

Almost surely, 2^{2151212022520} is an apocalyptic number.

2151212022520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151212022520 is an abundant number, since it is smaller than the sum of its proper divisors (3129194566280).

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

2151212022520 is a wasteful number, since it uses less digits than its factorization.

2151212022520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147148 (or 147144 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 2151212022520 in words is "two trillion, one hundred fifty-one billion, two hundred twelve million, twenty-two thousand, five hundred twenty".