121013010520 has 64 divisors (see below), whose sum is σ = 285392056320. Its totient is φ = 46092925824.

The previous prime is 121013010493. The next prime is 121013010541. The reversal of 121013010520 is 25010310121.

It is a super-2 number, since 2×121013010520² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121013010494 and 121013010503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89764 + ... + 500083.

It is an arithmetic number, because the mean of its divisors is an integer number (4459250880).

Almost surely, 2^121013010520 is an apocalyptic number.

121013010520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121013010520 is an abundant number, since it is smaller than the sum of its proper divisors (164379045800).

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

121013010520 is a wasteful number, since it uses less digits than its factorization.

121013010520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590104 (or 590100 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 121013010520 its reverse (25010310121), we get a palindrome (146023320641).

The spelling of 121013010520 in words is "one hundred twenty-one billion, thirteen million, ten thousand, five hundred twenty".