121011202001001 has 32 divisors (see below), whose sum is σ = 174243076479360. Its totient is φ = 74261532985344.

The previous prime is 121011202000921. The next prime is 121011202001021. The reversal of 121011202001001 is 100100202110121.

It is not a de Polignac number, because 121011202001001 - 2²⁵ = 121011168446569 is a prime.

It is a super-2 number, since 2×121011202001001² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121011202001021) 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, 18422631 + ... + 24112563.

It is an arithmetic number, because the mean of its divisors is an integer number (5445096139980).

Almost surely, 2^{121011202001001} is an apocalyptic number.

It is an amenable number.

121011202001001 is a deficient number, since it is larger than the sum of its proper divisors (53231874478359).

121011202001001 is a wasteful number, since it uses less digits than its factorization.

121011202001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691465.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121011202001001 its reverse (100100202110121), we get a palindrome (221111404111122).

The spelling of 121011202001001 in words is "one hundred twenty-one trillion, eleven billion, two hundred two million, one thousand, one".