122621107215 has 16 divisors (see below), whose sum is σ = 206519760000. Its totient is φ = 61955927712.

The previous prime is 122621107087. The next prime is 122621107237. The reversal of 122621107215 is 512701126221.

It is a happy number.

It is not a de Polignac number, because 122621107215 - 2⁷ = 122621107087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215124465 + ... + 215125034.

It is an arithmetic number, because the mean of its divisors is an integer number (12907485000).

Almost surely, 2^122621107215 is an apocalyptic number.

122621107215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122621107215 is a deficient number, since it is larger than the sum of its proper divisors (83898652785).

122621107215 is a wasteful number, since it uses less digits than its factorization.

122621107215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430249526.

The product of its (nonzero) digits is 3360, while the sum is 30.

The spelling of 122621107215 in words is "one hundred twenty-two billion, six hundred twenty-one million, one hundred seven thousand, two hundred fifteen".