622109210121 has 135 divisors (see below), whose sum is σ = 1108435515213. Its totient is φ = 335245624560.

The previous prime is 622109210111. The next prime is 622109210137. The reversal of 622109210121 is 121012901226.

The square root of 622109210121 is 788739.

It is a perfect power (a square), and thus also a powerful number.

622109210121 is a `hidden beast` number, since 622 + 1 + 0 + 9 + 2 + 10 + 1 + 21 = 666.

It is not a de Polignac number, because 622109210121 - 2¹¹ = 622109208073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (622109210111) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 8762101516 + ... + 8762101586.

Almost surely, 2^622109210121 is an apocalyptic number.

622109210121 is the 788739-th square number.

622109210121 is the 394370-th centered octagonal number.

It is an amenable number.

622109210121 is a deficient number, since it is larger than the sum of its proper divisors (486326305092).

622109210121 is an frugal number, since it uses more digits than its factorization.

622109210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 622109210121 in words is "six hundred twenty-two billion, one hundred nine million, two hundred ten thousand, one hundred twenty-one".