121123232020 has 24 divisors (see below), whose sum is σ = 290695757184. Its totient is φ = 41527965216.

The previous prime is 121123231969. The next prime is 121123232029. The reversal of 121123232020 is 20232321121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123232029) 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, 432582832 + ... + 432583111.

It is an arithmetic number, because the mean of its divisors is an integer number (12112323216).

Almost surely, 2^121123232020 is an apocalyptic number.

121123232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121123232020 is an abundant number, since it is smaller than the sum of its proper divisors (169572525164).

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

121123232020 is a wasteful number, since it uses less digits than its factorization.

121123232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865165959 (or 865165957 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121123232020 its reverse (20232321121), we get a palindrome (141355553141).

The spelling of 121123232020 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred thirty-two thousand, twenty".