121321233020 has 24 divisors (see below), whose sum is σ = 274372635264. Its totient is φ = 44795532096.

The previous prime is 121321233001. The next prime is 121321233029. The reversal of 121321233020 is 20332123121.

121321233020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121321232983 and 121321233001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321233029) 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, 233309804 + ... + 233310323.

It is an arithmetic number, because the mean of its divisors is an integer number (11432193136).

Almost surely, 2^121321233020 is an apocalyptic number.

121321233020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121321233020 is an abundant number, since it is smaller than the sum of its proper divisors (153051402244).

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

121321233020 is a wasteful number, since it uses less digits than its factorization.

121321233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466620149 (or 466620147 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121321233020 its reverse (20332123121), we get a palindrome (141653356141).

The spelling of 121321233020 in words is "one hundred twenty-one billion, three hundred twenty-one million, two hundred thirty-three thousand, twenty".