121324140020 has 24 divisors (see below), whose sum is σ = 258583393824. Its totient is φ = 47805332256.

The previous prime is 121324140019. The next prime is 121324140029. The reversal of 121324140020 is 20041423121.

121324140020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121324139974 and 121324140001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121324140029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45268862 + ... + 45271541.

It is an arithmetic number, because the mean of its divisors is an integer number (10774308076).

Almost surely, 2^121324140020 is an apocalyptic number.

121324140020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121324140020 is an abundant number, since it is smaller than the sum of its proper divisors (137259253804).

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

121324140020 is a wasteful number, since it uses less digits than its factorization.

121324140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90540479 (or 90540477 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121324140020 its reverse (20041423121), we get a palindrome (141365563141).

The spelling of 121324140020 in words is "one hundred twenty-one billion, three hundred twenty-four million, one hundred forty thousand, twenty".