121021210202199 has 16 divisors (see below), whose sum is σ = 162509301820800. Its totient is φ = 80108330619296.

The previous prime is 121021210202147. The next prime is 121021210202219. The reversal of 121021210202199 is 991202012120121.

It is a cyclic number.

It is not a de Polignac number, because 121021210202199 - 2⁸ = 121021210201943 is a prime.

It is a super-2 number, since 2×121021210202199² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021210202119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170636544 + ... + 171344309.

It is an arithmetic number, because the mean of its divisors is an integer number (10156831363800).

Almost surely, 2^{121021210202199} is an apocalyptic number.

121021210202199 is a deficient number, since it is larger than the sum of its proper divisors (41488091618601).

121021210202199 is a wasteful number, since it uses less digits than its factorization.

121021210202199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341981694.

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 121021210202199 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred ten million, two hundred two thousand, one hundred ninety-nine".