121022000000 has 224 divisors, whose sum is σ = 328826259720. Its totient is φ = 44000000000.

The previous prime is 121021999963. The next prime is 121022000023. The reversal of 121022000000 is 220121.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 21997250 + ... + 22002750.

Almost surely, 2^121022000000 is an apocalyptic number.

121022000000 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 121022000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164413129860).

121022000000 is an abundant number, since it is smaller than the sum of its proper divisors (207804259720).

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

121022000000 is an frugal number, since it uses more digits than its factorization.

121022000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556 (or 5519 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 121022000000 its reverse (220121), we get a palindrome (121022220121).

It can be divided in two parts, 12102 and 2000000, that added together give a palindrome (2012102).

The spelling of 121022000000 in words is "one hundred twenty-one billion, twenty-two million", and thus it is an aban number.