121233132120220 has 24 divisors (see below), whose sum is σ = 255922507185408. Its totient is φ = 48239361470400.

The previous prime is 121233132120181. The next prime is 121233132120239. The reversal of 121233132120220 is 22021231332121.

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, 15868207191 + ... + 15868214830.

It is an arithmetic number, because the mean of its divisors is an integer number (10663437799392).

Almost surely, 2^{121233132120220} is an apocalyptic number.

121233132120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121233132120220 is an abundant number, since it is smaller than the sum of its proper divisors (134689375065188).

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

121233132120220 is a wasteful number, since it uses less digits than its factorization.

121233132120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31736422221 (or 31736422219 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 121233132120220 its reverse (22021231332121), we get a palindrome (143254363452341).

The spelling of 121233132120220 in words is "one hundred twenty-one trillion, two hundred thirty-three billion, one hundred thirty-two million, one hundred twenty thousand, two hundred twenty".