122821861692 has 48 divisors (see below), whose sum is σ = 287067594240. Its totient is φ = 40871648832.

The previous prime is 122821861667. The next prime is 122821861693. The reversal of 122821861692 is 296168128221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122821861693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24966409 + ... + 24971327.

It is an arithmetic number, because the mean of its divisors is an integer number (5980574880).

Almost surely, 2^122821861692 is an apocalyptic number.

122821861692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122821861692 is an abundant number, since it is smaller than the sum of its proper divisors (164245732548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122821861692 is a wasteful number, since it uses less digits than its factorization.

122821861692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8010 (or 8008 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The spelling of 122821861692 in words is "one hundred twenty-two billion, eight hundred twenty-one million, eight hundred sixty-one thousand, six hundred ninety-two".