2121500066624 has 56 divisors (see below), whose sum is σ = 4313087932608. Its totient is φ = 1034744437760.

The previous prime is 2121500066603. The next prime is 2121500066641. The reversal of 2121500066624 is 4266600051212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22053959 + ... + 22149945.

It is an arithmetic number, because the mean of its divisors is an integer number (77019427368).

Almost surely, 2^{2121500066624} is an apocalyptic number.

It is an amenable number.

2121500066624 is an abundant number, since it is smaller than the sum of its proper divisors (2191587865984).

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

2121500066624 is an equidigital number, since it uses as much as digits as its factorization.

2121500066624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104463 (or 104453 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 2121500066624 in words is "two trillion, one hundred twenty-one billion, five hundred million, sixty-six thousand, six hundred twenty-four".