121012131012020 has 48 divisors (see below), whose sum is σ = 269412883880448. Its totient is φ = 45577367556480.

The previous prime is 121012131012001. The next prime is 121012131012023. The reversal of 121012131012020 is 20210131210121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121012131012020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012131012023) 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, 2637556202 + ... + 2637602081.

It is an arithmetic number, because the mean of its divisors is an integer number (5612768414176).

Almost surely, 2^{121012131012020} is an apocalyptic number.

121012131012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012131012020 is an abundant number, since it is smaller than the sum of its proper divisors (148400752868428).

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

121012131012020 is a wasteful number, since it uses less digits than its factorization.

121012131012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275158360 (or 5275158358 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121012131012020 its reverse (20210131210121), we get a palindrome (141222262222141).

The spelling of 121012131012020 in words is "one hundred twenty-one trillion, twelve billion, one hundred thirty-one million, twelve thousand, twenty".