122222121200220 has 96 divisors (see below), whose sum is σ = 343063451707200. Its totient is φ = 32512484818944.

The previous prime is 122222121200209. The next prime is 122222121200237. The reversal of 122222121200220 is 22002121222221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60979452 + ... + 62951868.

It is an arithmetic number, because the mean of its divisors is an integer number (3573577621950).

Almost surely, 2^{122222121200220} is an apocalyptic number.

122222121200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122222121200220 is an abundant number, since it is smaller than the sum of its proper divisors (220841330506980).

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

122222121200220 is a wasteful number, since it uses less digits than its factorization.

122222121200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974967 (or 1974965 counting only the distinct ones).

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

Adding to 122222121200220 its reverse (22002121222221), we get a palindrome (144224242422441).

The spelling of 122222121200220 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred thousand, two hundred twenty".