121111022220020 has 96 divisors (see below), whose sum is σ = 298072317263616. Its totient is φ = 40467951129600.

The previous prime is 121111022219959. The next prime is 121111022220053. The reversal of 121111022220020 is 20022220111121.

121111022220020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5809862 + ... + 16612541.

It is an arithmetic number, because the mean of its divisors is an integer number (3104919971496).

Almost surely, 2^{121111022220020} is an apocalyptic number.

121111022220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111022220020 is an abundant number, since it is smaller than the sum of its proper divisors (176961295043596).

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

121111022220020 is a wasteful number, since it uses less digits than its factorization.

121111022220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22423401 (or 22423399 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121111022220020 its reverse (20022220111121), we get a palindrome (141133242331141).

The spelling of 121111022220020 in words is "one hundred twenty-one trillion, one hundred eleven billion, twenty-two million, two hundred twenty thousand, twenty".