100121221220019 has 32 divisors (see below), whose sum is σ = 138738642223104. Its totient is φ = 64156421031840.

The previous prime is 100121221219969. The next prime is 100121221220159. The reversal of 100121221220019 is 910022122121001.

It is not a de Polignac number, because 100121221220019 - 2²⁷ = 100121087002291 is a prime.

It is a super-2 number, since 2×100121221220019² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100121221220219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884262 + ... + 14275604.

It is an arithmetic number, because the mean of its divisors is an integer number (4335582569472).

Almost surely, 2^{100121221220019} is an apocalyptic number.

100121221220019 is a deficient number, since it is larger than the sum of its proper divisors (38617421003085).

100121221220019 is a wasteful number, since it uses less digits than its factorization.

100121221220019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12391967.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 100121221220019 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty thousand, nineteen".