2121392072 has 16 divisors (see below), whose sum is σ = 3978480240. Its totient is φ = 1060464016.

The previous prime is 2121392069. The next prime is 2121392081. The reversal of 2121392072 is 2702931212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13523 + ... + 66525.

It is an arithmetic number, because the mean of its divisors is an integer number (248655015).

Almost surely, 2^2121392072 is an apocalyptic number.

It is an amenable number.

2121392072 is a deficient number, since it is larger than the sum of its proper divisors (1857088168).

2121392072 is a wasteful number, since it uses less digits than its factorization.

2121392072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58012 (or 58008 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 2121392072 is about 46058.5721880303. The cubic root of 2121392072 is about 1284.9127753983.

The spelling of 2121392072 in words is "two billion, one hundred twenty-one million, three hundred ninety-two thousand, seventy-two".