121020220000 has 240 divisors, whose sum is σ = 303250291344. Its totient is φ = 47520000000.

The previous prime is 121020219989. The next prime is 121020220033. The reversal of 121020220000 is 22020121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 365619835 + ... + 365620165.

Almost surely, 2^121020220000 is an apocalyptic number.

121020220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121020220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151625145672).

121020220000 is an abundant number, since it is smaller than the sum of its proper divisors (182230071344).

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

121020220000 is a wasteful number, since it uses less digits than its factorization.

121020220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 121020220000 its reverse (22020121), we get a palindrome (121042240121).

The spelling of 121020220000 in words is "one hundred twenty-one billion, twenty million, two hundred twenty thousand".