121101020000 has 120 divisors (see below), whose sum is σ = 300881462112. Its totient is φ = 47960000000.

The previous prime is 121101019981. The next prime is 121101020023. The reversal of 121101020000 is 20101121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121101020000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1990025 + ... + 2049975.

Almost surely, 2^121101020000 is an apocalyptic number.

121101020000 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 121101020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150440731056).

121101020000 is an abundant number, since it is smaller than the sum of its proper divisors (179780442112).

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

121101020000 is an equidigital number, since it uses as much as digits as its factorization.

121101020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60082 (or 60059 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121101020000 its reverse (20101121), we get a palindrome (121121121121).

The spelling of 121101020000 in words is "one hundred twenty-one billion, one hundred one million, twenty thousand".