2151206901 has 48 divisors (see below), whose sum is σ = 3307100160. Its totient is φ = 1345248000.

The previous prime is 2151206891. The next prime is 2151206909. The reversal of 2151206901 is 1096021512.

2151206901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2151206901 - 2⁷ = 2151206773 is a prime.

It is a super-2 number, since 2×2151206901² = 9255382261820047602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151206909) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2069940 + ... + 2070978.

It is an arithmetic number, because the mean of its divisors is an integer number (68897920).

Almost surely, 2^2151206901 is an apocalyptic number.

It is an amenable number.

2151206901 is a deficient number, since it is larger than the sum of its proper divisors (1155893259).

2151206901 is a wasteful number, since it uses less digits than its factorization.

2151206901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 2151206901 is about 46381.1049997733. The cubic root of 2151206901 is about 1290.9043397346.

The spelling of 2151206901 in words is "two billion, one hundred fifty-one million, two hundred six thousand, nine hundred one".