121020020 has 48 divisors (see below), whose sum is σ = 289312128. Its totient is φ = 42092160.

The previous prime is 121020019. The next prime is 121020061. The reversal of 121020020 is 20020121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6899 + ... + 17018.

It is an arithmetic number, because the mean of its divisors is an integer number (6027336).

Almost surely, 2^121020020 is an apocalyptic number.

121020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020020 is an abundant number, since it is smaller than the sum of its proper divisors (168292108).

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

121020020 is a wasteful number, since it uses less digits than its factorization.

121020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23960 (or 23958 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 121020020 is about 11000.9099623622. The cubic root of 121020020 is about 494.6360212422.

Adding to 121020020 its reverse (20020121), we get a palindrome (141040141).

The spelling of 121020020 in words is "one hundred twenty-one million, twenty thousand, twenty".