2122151715 has 24 divisors (see below), whose sum is σ = 3687421920. Its totient is φ = 1129037184.

The previous prime is 2122151711. The next prime is 2122151777. The reversal of 2122151715 is 5171512212.

It is not a de Polignac number, because 2122151715 - 2² = 2122151711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122151711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39247 + ... + 76056.

It is an arithmetic number, because the mean of its divisors is an integer number (153642580).

Almost surely, 2^2122151715 is an apocalyptic number.

2122151715 is a deficient number, since it is larger than the sum of its proper divisors (1565270205).

2122151715 is a wasteful number, since it uses less digits than its factorization.

2122151715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115723 (or 115720 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 2122151715 is about 46066.8179387290. The cubic root of 2122151715 is about 1285.0661272979.

Adding to 2122151715 its reverse (5171512212), we get a palindrome (7293663927).

The spelling of 2122151715 in words is "two billion, one hundred twenty-two million, one hundred fifty-one thousand, seven hundred fifteen".