2151922412 has 24 divisors (see below), whose sum is σ = 4056364032. Its totient is φ = 995979600.

The previous prime is 2151922411. The next prime is 2151922429. The reversal of 2151922412 is 2142291512.

It is not an unprimeable number, because it can be changed into a prime (2151922411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374414 + ... + 380117.

It is an arithmetic number, because the mean of its divisors is an integer number (169015168).

Almost surely, 2^2151922412 is an apocalyptic number.

It is an amenable number.

2151922412 is a deficient number, since it is larger than the sum of its proper divisors (1904441620).

2151922412 is a wasteful number, since it uses less digits than its factorization.

2151922412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754589 (or 754587 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2151922412 is about 46388.8177473839. The cubic root of 2151922412 is about 1291.0474460482.

The spelling of 2151922412 in words is "two billion, one hundred fifty-one million, nine hundred twenty-two thousand, four hundred twelve".