2156215622 has 16 divisors (see below), whose sum is σ = 3529332432. Its totient is φ = 979825920.

The previous prime is 2156215609. The next prime is 2156215637. The reversal of 2156215622 is 2265126512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82538 + ... + 105474.

It is an arithmetic number, because the mean of its divisors is an integer number (220583277).

Almost surely, 2^2156215622 is an apocalyptic number.

2156215622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2156215622 is a deficient number, since it is larger than the sum of its proper divisors (1373116810).

2156215622 is a wasteful number, since it uses less digits than its factorization.

2156215622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27223.

The product of its digits is 14400, while the sum is 32.

The square root of 2156215622 is about 46435.0688811807. The cubic root of 2156215622 is about 1291.9054472208.

The spelling of 2156215622 in words is "two billion, one hundred fifty-six million, two hundred fifteen thousand, six hundred twenty-two".