121200122001 has 32 divisors (see below), whose sum is σ = 191125490688. Its totient is φ = 66870947520.

The previous prime is 121200121957. The next prime is 121200122033. The reversal of 121200122001 is 100221002121.

It is not a de Polignac number, because 121200122001 - 2²⁵ = 121166567569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121200022001) 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, 493575 + ... + 697148.

It is an arithmetic number, because the mean of its divisors is an integer number (5972671584).

Almost surely, 2^121200122001 is an apocalyptic number.

It is an amenable number.

121200122001 is a deficient number, since it is larger than the sum of its proper divisors (69925368687).

121200122001 is a wasteful number, since it uses less digits than its factorization.

121200122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190901.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121200122001 its reverse (100221002121), we get a palindrome (221421124122).

The spelling of 121200122001 in words is "one hundred twenty-one billion, two hundred million, one hundred twenty-two thousand, one".