121002542202 has 16 divisors (see below), whose sum is σ = 246571218720. Its totient is φ = 39573158352.

The previous prime is 121002542201. The next prime is 121002542209. The reversal of 121002542202 is 202245200121.

It is not an unprimeable number, because it can be changed into a prime (121002542201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190255252 + ... + 190255887.

It is an arithmetic number, because the mean of its divisors is an integer number (15410701170).

Almost surely, 2^121002542202 is an apocalyptic number.

121002542202 is an abundant number, since it is smaller than the sum of its proper divisors (125568676518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121002542202 is a wasteful number, since it uses less digits than its factorization.

121002542202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380511197.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 121002542202 its reverse (202245200121), we get a palindrome (323247742323).

The spelling of 121002542202 in words is "one hundred twenty-one billion, two million, five hundred forty-two thousand, two hundred two".