2151223012 has 12 divisors (see below), whose sum is σ = 3768540160. Its totient is φ = 1074497256.

The previous prime is 2151223007. The next prime is 2151223033. The reversal of 2151223012 is 2103221512.

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, 274212 + ... + 281947.

Almost surely, 2^2151223012 is an apocalyptic number.

It is an amenable number.

2151223012 is a deficient number, since it is larger than the sum of its proper divisors (1617317148).

2151223012 is a wasteful number, since it uses less digits than its factorization.

2151223012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557130 (or 557128 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2151223012 is about 46381.2786800882. The cubic root of 2151223012 is about 1290.9075623764.

Adding to 2151223012 its reverse (2103221512), we get a palindrome (4254444524).

The spelling of 2151223012 in words is "two billion, one hundred fifty-one million, two hundred twenty-three thousand, twelve".