122211210122100 has 108 divisors (see below), whose sum is σ = 417888271251360. Its totient is φ = 29626960027200.

The previous prime is 122211210122093. The next prime is 122211210122101. The reversal of 122211210122100 is 1221012112221.

122211210122100 is a `hidden beast` number, since 1 + 22 + 211 + 210 + 1 + 221 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211210122101) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 6172273440 + ... + 6172293239.

It is an arithmetic number, because the mean of its divisors is an integer number (3869335844920).

Almost surely, 2^{122211210122100} is an apocalyptic number.

122211210122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122211210122100 is an abundant number, since it is smaller than the sum of its proper divisors (295677061129260).

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

122211210122100 is a wasteful number, since it uses less digits than its factorization.

122211210122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12344566710 (or 12344566700 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 122211210122100 its reverse (1221012112221), we get a palindrome (123432222234321).

The spelling of 122211210122100 in words is "one hundred twenty-two trillion, two hundred eleven billion, two hundred ten million, one hundred twenty-two thousand, one hundred".