2121010308916 has 12 divisors (see below), whose sum is σ = 3721024322820. Its totient is φ = 1057860502400.

The previous prime is 2121010308889. The next prime is 2121010308917. The reversal of 2121010308916 is 6198030101212.

It can be written as a sum of positive squares in 2 ways, for example, as 1677014640016 + 443995668900 = 1294996^2 + 666330^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121010308917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661161211 + ... + 661164418.

It is an arithmetic number, because the mean of its divisors is an integer number (310085360235).

Almost surely, 2^{2121010308916} is an apocalyptic number.

It is an amenable number.

2121010308916 is a deficient number, since it is larger than the sum of its proper divisors (1600014013904).

2121010308916 is a wasteful number, since it uses less digits than its factorization.

2121010308916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322326034 (or 1322326032 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 2121010308916 in words is "two trillion, one hundred twenty-one billion, ten million, three hundred eight thousand, nine hundred sixteen".