121002200121 has 32 divisors (see below), whose sum is σ = 181123200000. Its totient is φ = 71209298880.

The previous prime is 121002200117. The next prime is 121002200141.

121002200121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 121002200121 - 2² = 121002200117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121002200097 and 121002200106.

It is not an unprimeable number, because it can be changed into a prime (121002200141) 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, 509980 + ... + 708578.

It is an arithmetic number, because the mean of its divisors is an integer number (5660100000).

Almost surely, 2^121002200121 is an apocalyptic number.

121002200121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121002200121 is a deficient number, since it is larger than the sum of its proper divisors (60120999879).

121002200121 is a wasteful number, since it uses less digits than its factorization.

121002200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199149.

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

It can be divided in two parts, 121002 and 200121, that added together give a palindrome (321123).

The spelling of 121002200121 in words is "one hundred twenty-one billion, two million, two hundred thousand, one hundred twenty-one".