100121022011009 has 4 divisors (see below), whose sum is σ = 100242087334704. Its totient is φ = 99999956687316.

The previous prime is 100121022010973. The next prime is 100121022011039. The reversal of 100121022011009 is 900110220121001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100121022011009 - 2¹⁶ = 100121021945473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121022011039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60532660607 + ... + 60532662260.

It is an arithmetic number, because the mean of its divisors is an integer number (25060521833676).

Almost surely, 2^{100121022011009} is an apocalyptic number.

It is an amenable number.

100121022011009 is a deficient number, since it is larger than the sum of its proper divisors (121065323695).

100121022011009 is an equidigital number, since it uses as much as digits as its factorization.

100121022011009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121065323694.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 100121022011009 in words is "one hundred trillion, one hundred twenty-one billion, twenty-two million, eleven thousand, nine".