122925212787 has 54 divisors (see below), whose sum is σ = 185804197572. Its totient is φ = 72250436544.

The previous prime is 122925212777. The next prime is 122925212801. The reversal of 122925212787 is 787212529221.

It is not a de Polignac number, because 122925212787 - 2⁶ = 122925212723 is a prime.

It is a super-2 number, since 2×122925212787² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122925212737) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 181573093 + ... + 181573769.

Almost surely, 2^122925212787 is an apocalyptic number.

122925212787 is a deficient number, since it is larger than the sum of its proper divisors (62878984785).

122925212787 is an frugal number, since it uses more digits than its factorization.

122925212787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429 (or 716 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

Multiplying 122925212787 by its sum of digits (48), we get a square (5900410213776 = 2429076²).

The spelling of 122925212787 in words is "one hundred twenty-two billion, nine hundred twenty-five million, two hundred twelve thousand, seven hundred eighty-seven".