121021120220000 has 1440 divisors, whose sum is σ = 412652640685824. Its totient is φ = 34326028800000.

The previous prime is 121021120219949. The next prime is 121021120220017. The reversal of 121021120220000 is 22021120121.

It is a super-2 number, since 2×121021120220000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 9949933919 + ... + 9949946081.

Almost surely, 2^{121021120220000} is an apocalyptic number.

121021120220000 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 121021120220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206326320342912).

121021120220000 is an abundant number, since it is smaller than the sum of its proper divisors (291631520465824).

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

121021120220000 is a wasteful number, since it uses less digits than its factorization.

121021120220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302 (or 12272 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121021120220000 its reverse (22021120121), we get a palindrome (121043141340121).

The spelling of 121021120220000 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twenty million, two hundred twenty thousand".