121100221121202 has 48 divisors (see below), whose sum is σ = 264709598343840. Its totient is φ = 40008937428096.

The previous prime is 121100221121171. The next prime is 121100221121221. The reversal of 121100221121202 is 202121122001121.

121100221121202 is a `hidden beast` number, since 1 + 21 + 100 + 221 + 121 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154965133 + ... + 155744639.

It is an arithmetic number, because the mean of its divisors is an integer number (5514783298830).

Almost surely, 2^{121100221121202} is an apocalyptic number.

121100221121202 is an abundant number, since it is smaller than the sum of its proper divisors (143609377222638).

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

121100221121202 is a wasteful number, since it uses less digits than its factorization.

121100221121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856007 (or 856004 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121100221121202 its reverse (202121122001121), we get a palindrome (323221343122323).

The spelling of 121100221121202 in words is "one hundred twenty-one trillion, one hundred billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred two".