122222221220100 has 144 divisors (see below), whose sum is σ = 353976444057600. Its totient is φ = 32560634112000.

The previous prime is 122222221220069. The next prime is 122222221220101. The reversal of 122222221220100 is 1022122222221.

It is not an unprimeable number, because it can be changed into a prime (122222221220101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4712986734 + ... + 4713012666.

It is an arithmetic number, because the mean of its divisors is an integer number (2458169750400).

Almost surely, 2^{122222221220100} is an apocalyptic number.

122222221220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122222221220100 is an abundant number, since it is smaller than the sum of its proper divisors (231754222837500).

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

122222221220100 is a wasteful number, since it uses less digits than its factorization.

122222221220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40750 (or 40743 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 122222221220100 its reverse (1022122222221), we get a palindrome (123244343442321).

The spelling of 122222221220100 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, one hundred".