121302130020 has 96 divisors (see below), whose sum is σ = 343218290688. Its totient is φ = 32008762752.

The previous prime is 121302130003. The next prime is 121302130057. The reversal of 121302130020 is 20031203121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2207317 + ... + 2261603.

It is an arithmetic number, because the mean of its divisors is an integer number (3575190528).

Almost surely, 2^121302130020 is an apocalyptic number.

121302130020 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 121302130020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171609145344).

121302130020 is an abundant number, since it is smaller than the sum of its proper divisors (221916160668).

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

121302130020 is a wasteful number, since it uses less digits than its factorization.

121302130020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54689 (or 54687 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 121302130020 its reverse (20031203121), we get a palindrome (141333333141).

The spelling of 121302130020 in words is "one hundred twenty-one billion, three hundred two million, one hundred thirty thousand, twenty".