121232020 has 96 divisors (see below), whose sum is σ = 318931200. Its totient is φ = 37684224.

The previous prime is 121232009. The next prime is 121232021. The reversal of 121232020 is 20232121.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121232021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106816 + ... + 107944.

It is an arithmetic number, because the mean of its divisors is an integer number (3322200).

Almost surely, 2^121232020 is an apocalyptic number.

121232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121232020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159465600).

121232020 is an abundant number, since it is smaller than the sum of its proper divisors (197699180).

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

121232020 is a wasteful number, since it uses less digits than its factorization.

121232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 121232020 is about 11010.5413127602. The cubic root of 121232020 is about 494.9246832998.

Adding to 121232020 its reverse (20232121), we get a palindrome (141464141).

The spelling of 121232020 in words is "one hundred twenty-one million, two hundred thirty-two thousand, twenty".