121322203231020 has 864 divisors, whose sum is σ = 403847402966784. Its totient is φ = 27183016058880.

The previous prime is 121322203231007. The next prime is 121322203231049. The reversal of 121322203231020 is 20132302223121.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 30127190247 + ... + 30127194273.

It is an arithmetic number, because the mean of its divisors is an integer number (467415975656).

Almost surely, 2^{121322203231020} is an apocalyptic number.

121322203231020 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 121322203231020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201923701483392).

121322203231020 is an abundant number, since it is smaller than the sum of its proper divisors (282525199735764).

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

121322203231020 is a wasteful number, since it uses less digits than its factorization.

121322203231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351 (or 4321 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 121322203231020 its reverse (20132302223121), we get a palindrome (141454505454141).

The spelling of 121322203231020 in words is "one hundred twenty-one trillion, three hundred twenty-two billion, two hundred three million, two hundred thirty-one thousand, twenty".