121331013301020 has 48 divisors (see below), whose sum is σ = 340083318869280. Its totient is φ = 32320986249216.

The previous prime is 121331013300983. The next prime is 121331013301021. The reversal of 121331013301020 is 20103310133121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331013301021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1060899565 + ... + 1061013924.

It is an arithmetic number, because the mean of its divisors is an integer number (7085069143110).

Almost surely, 2^{121331013301020} is an apocalyptic number.

121331013301020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121331013301020 is an abundant number, since it is smaller than the sum of its proper divisors (218752305568260).

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

121331013301020 is a wasteful number, since it uses less digits than its factorization.

121331013301020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121914454 (or 2121914452 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 121331013301020 its reverse (20103310133121), we get a palindrome (141434323434141).

The spelling of 121331013301020 in words is "one hundred twenty-one trillion, three hundred thirty-one billion, thirteen million, three hundred one thousand, twenty".