121080020 has 12 divisors (see below), whose sum is σ = 254268084. Its totient is φ = 48432000.

The previous prime is 121080019. The next prime is 121080031. The reversal of 121080020 is 20080121.

It can be written as a sum of positive squares in 2 ways, for example, as 94906564 + 26173456 = 9742^2 + 5116^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121079977 and 121080004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3026981 + ... + 3027020.

It is an arithmetic number, because the mean of its divisors is an integer number (21189007).

Almost surely, 2^121080020 is an apocalyptic number.

121080020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121080020 is an abundant number, since it is smaller than the sum of its proper divisors (133188064).

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

121080020 is a wasteful number, since it uses less digits than its factorization.

121080020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6054010 (or 6054008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 121080020 is about 11003.6366715736. The cubic root of 121080020 is about 494.7177522317.

The spelling of 121080020 in words is "one hundred twenty-one million, eighty thousand, twenty".