121201021202001 has 48 divisors (see below), whose sum is σ = 175917001104000. Its totient is φ = 74189680621056.

The previous prime is 121201021201957. The next prime is 121201021202003. The reversal of 121201021202001 is 100202120102121.

It is not a de Polignac number, because 121201021202001 - 2¹⁷ = 121201021070929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121201021202003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 364360165 + ... + 364692653.

It is an arithmetic number, because the mean of its divisors is an integer number (3664937523000).

Almost surely, 2^{121201021202001} is an apocalyptic number.

It is an amenable number.

121201021202001 is a deficient number, since it is larger than the sum of its proper divisors (54715979901999).

121201021202001 is a wasteful number, since it uses less digits than its factorization.

121201021202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336330 (or 336317 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201021202001 its reverse (100202120102121), we get a palindrome (221403141304122).

The spelling of 121201021202001 in words is "one hundred twenty-one trillion, two hundred one billion, twenty-one million, two hundred two thousand, one".