121011000100199 has 12 divisors (see below), whose sum is σ = 133094553782568. Its totient is φ = 109941797805840.

The previous prime is 121011000100139. The next prime is 121011000100213. The reversal of 121011000100199 is 991001000110121.

It is not a de Polignac number, because 121011000100199 - 2¹⁶ = 121011000034663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011000100139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309814409 + ... + 310204754.

It is an arithmetic number, because the mean of its divisors is an integer number (11091212815214).

Almost surely, 2^{121011000100199} is an apocalyptic number.

121011000100199 is a deficient number, since it is larger than the sum of its proper divisors (12083553682369).

121011000100199 is a wasteful number, since it uses less digits than its factorization.

121011000100199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620020798 (or 620020787 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 26.

The spelling of 121011000100199 in words is "one hundred twenty-one trillion, eleven billion, one hundred thousand, one hundred ninety-nine".