100121212122 has 128 divisors (see below), whose sum is σ = 223612316928. Its totient is φ = 29748326400.

The previous prime is 100121212111. The next prime is 100121212171. The reversal of 100121212122 is 221212121001.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26200972 + ... + 26204792.

It is an arithmetic number, because the mean of its divisors is an integer number (1746971226).

Almost surely, 2^100121212122 is an apocalyptic number.

100121212122 is an abundant number, since it is smaller than the sum of its proper divisors (123491104806).

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

100121212122 is a wasteful number, since it uses less digits than its factorization.

100121212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100121212122 its reverse (221212121001), we get a palindrome (321333333123).

The spelling of 100121212122 in words is "one hundred billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".