2101772012 has 12 divisors (see below), whose sum is σ = 3767811096. Its totient is φ = 1025254560.

The previous prime is 2101771951. The next prime is 2101772027. The reversal of 2101772012 is 2102771012.

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, 6407678 + ... + 6408005.

It is an arithmetic number, because the mean of its divisors is an integer number (313984258).

Almost surely, 2^2101772012 is an apocalyptic number.

It is an amenable number.

2101772012 is a deficient number, since it is larger than the sum of its proper divisors (1666039084).

2101772012 is a wasteful number, since it uses less digits than its factorization.

2101772012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12815728 (or 12815726 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 2101772012 is about 45845.0871086532. The cubic root of 2101772012 is about 1280.9392544612.

The spelling of 2101772012 in words is "two billion, one hundred one million, seven hundred seventy-two thousand, twelve".