120121023100 has 144 divisors (see below), whose sum is σ = 285837010816. Its totient is φ = 43545600000.

The previous prime is 120121023079. The next prime is 120121023101. The reversal of 120121023100 is 1320121021.

It is a super-2 number, since 2×120121023100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121023101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59553292 + ... + 59555308.

Almost surely, 2^120121023100 is an apocalyptic number.

120121023100 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 120121023100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142918505408).

120121023100 is an abundant number, since it is smaller than the sum of its proper divisors (165715987716).

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

120121023100 is a wasteful number, since it uses less digits than its factorization.

120121023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856 (or 2849 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 120121023100 its reverse (1320121021), we get a palindrome (121441144121).

The spelling of 120121023100 in words is "one hundred twenty billion, one hundred twenty-one million, twenty-three thousand, one hundred".