121331132020 has 24 divisors (see below), whose sum is σ = 291194717184. Its totient is φ = 41599245216.

The previous prime is 121331132017. The next prime is 121331132057. The reversal of 121331132020 is 20231133121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433325332 + ... + 433325611.

It is an arithmetic number, because the mean of its divisors is an integer number (12133113216).

Almost surely, 2^121331132020 is an apocalyptic number.

121331132020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121331132020 is an abundant number, since it is smaller than the sum of its proper divisors (169863585164).

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

121331132020 is a wasteful number, since it uses less digits than its factorization.

121331132020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866650959 (or 866650957 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121331132020 its reverse (20231133121), we get a palindrome (141562265141).

The spelling of 121331132020 in words is "one hundred twenty-one billion, three hundred thirty-one million, one hundred thirty-two thousand, twenty".