121113331111220 has 48 divisors (see below), whose sum is σ = 291919514035968. Its totient is φ = 41346353614080.

The previous prime is 121113331111211. The next prime is 121113331111303. The reversal of 121113331111220 is 22111133311121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1856394896 + ... + 1856460135.

It is an arithmetic number, because the mean of its divisors is an integer number (6081656542416).

Almost surely, 2^{121113331111220} is an apocalyptic number.

121113331111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121113331111220 is an abundant number, since it is smaller than the sum of its proper divisors (170806182924748).

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

121113331111220 is a wasteful number, since it uses less digits than its factorization.

121113331111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712855280 (or 3712855278 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 121113331111220 its reverse (22111133311121), we get a palindrome (143224464422341).

The spelling of 121113331111220 in words is "one hundred twenty-one trillion, one hundred thirteen billion, three hundred thirty-one million, one hundred eleven thousand, two hundred twenty".