2115222651 has 12 divisors (see below), whose sum is σ = 3061601712. Its totient is φ = 1407249936.

The previous prime is 2115222617. The next prime is 2115222661. The reversal of 2115222651 is 1562225112.

2115222651 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 2 + 2 + 2 + 651 = 666.

It is not a de Polignac number, because 2115222651 - 2⁶ = 2115222587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115222601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236916 + ... + 245681.

It is an arithmetic number, because the mean of its divisors is an integer number (255133476).

Almost surely, 2^2115222651 is an apocalyptic number.

2115222651 is a deficient number, since it is larger than the sum of its proper divisors (946379061).

2115222651 is a wasteful number, since it uses less digits than its factorization.

2115222651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483090 (or 483087 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 2115222651 is about 45991.5497781930. The cubic root of 2115222651 is about 1283.6659738308.

Adding to 2115222651 its reverse (1562225112), we get a palindrome (3677447763).

The spelling of 2115222651 in words is "two billion, one hundred fifteen million, two hundred twenty-two thousand, six hundred fifty-one".