121025020 has 24 divisors (see below), whose sum is σ = 255777984. Its totient is φ = 48100416.

The previous prime is 121025017. The next prime is 121025027. The reversal of 121025020 is 20520121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121025027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16132 + ... + 22411.

It is an arithmetic number, because the mean of its divisors is an integer number (10657416).

Almost surely, 2^121025020 is an apocalyptic number.

121025020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121025020 is an abundant number, since it is smaller than the sum of its proper divisors (134752964).

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

121025020 is a wasteful number, since it uses less digits than its factorization.

121025020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38709 (or 38707 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 121025020 is about 11001.1372139429. The cubic root of 121025020 is about 494.6428331897.

Adding to 121025020 its reverse (20520121), we get a palindrome (141545141).

The spelling of 121025020 in words is "one hundred twenty-one million, twenty-five thousand, twenty".