121002002211021 has 32 divisors (see below), whose sum is σ = 171575281574400. Its totient is φ = 75638836203840.

The previous prime is 121002002211019. The next prime is 121002002211043. The reversal of 121002002211021 is 120112200200121.

It is not a de Polignac number, because 121002002211021 - 2¹ = 121002002211019 is a prime.

It is a super-2 number, since 2×121002002211021² (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 (121002002211221) 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, 18548506 + ... + 24208491.

It is an arithmetic number, because the mean of its divisors is an integer number (5361727549200).

Almost surely, 2^{121002002211021} is an apocalyptic number.

It is an amenable number.

121002002211021 is a deficient number, since it is larger than the sum of its proper divisors (50573279363379).

121002002211021 is a wasteful number, since it uses less digits than its factorization.

121002002211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42757529.

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

Adding to 121002002211021 its reverse (120112200200121), we get a palindrome (241114202411142).

The spelling of 121002002211021 in words is "one hundred twenty-one trillion, two billion, two million, two hundred eleven thousand, twenty-one".