121100222202020 has 24 divisors (see below), whose sum is σ = 254311513747200. Its totient is φ = 48439889428832.

The previous prime is 121100222201993. The next prime is 121100222202059. The reversal of 121100222202020 is 20202222001121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121100222202020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7437530 + ... + 17248689.

It is an arithmetic number, because the mean of its divisors is an integer number (10596313072800).

Almost surely, 2^{121100222202020} is an apocalyptic number.

121100222202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100222202020 is an abundant number, since it is smaller than the sum of its proper divisors (133211291545180).

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

121100222202020 is a wasteful number, since it uses less digits than its factorization.

121100222202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24931507 (or 24931505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121100222202020 its reverse (20202222001121), we get a palindrome (141302444203141).

The spelling of 121100222202020 in words is "one hundred twenty-one trillion, one hundred billion, two hundred twenty-two million, two hundred two thousand, twenty".