121032011220 has 48 divisors (see below), whose sum is σ = 339455491200. Its totient is φ = 32221311616.

The previous prime is 121032011197. The next prime is 121032011227. The reversal of 121032011220 is 22110230121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121032011220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121032011227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647867 + ... + 1719746.

It is an arithmetic number, because the mean of its divisors is an integer number (7071989400).

Almost surely, 2^121032011220 is an apocalyptic number.

121032011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121032011220 is an abundant number, since it is smaller than the sum of its proper divisors (218423479980).

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

121032011220 is a wasteful number, since it uses less digits than its factorization.

121032011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368224 (or 3368222 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121032011220 its reverse (22110230121), we get a palindrome (143142241341).

The spelling of 121032011220 in words is "one hundred twenty-one billion, thirty-two million, eleven thousand, two hundred twenty".