100121221219976 has 24 divisors (see below), whose sum is σ = 206344872247710. Its totient is φ = 45509646008640.

The previous prime is 100121221219969. The next prime is 100121221220159. The reversal of 100121221219976 is 679912122121001.

It can be written as a sum of positive squares in only one way, i.e., 95686937080900 + 4434284139076 = 9781970^2 + 2105774^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51715505861 + ... + 51715507796.

Almost surely, 2^{100121221219976} is an apocalyptic number.

It is an amenable number.

100121221219976 is an abundant number, since it is smaller than the sum of its proper divisors (106223651027734).

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

100121221219976 is a wasteful number, since it uses less digits than its factorization.

100121221219976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103431013685 (or 103431013670 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 44.

The spelling of 100121221219976 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred nineteen thousand, nine hundred seventy-six".