12220031021221 has 8 divisors (see below), whose sum is σ = 12338638099200. Its totient is φ = 12101862417600.

The previous prime is 12220031021203. The next prime is 12220031021273. The reversal of 12220031021221 is 12212013002221.

12220031021221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12220031021221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220031021921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109562581 + ... + 109674058.

It is an arithmetic number, because the mean of its divisors is an integer number (1542329762400).

Almost surely, 2^{12220031021221} is an apocalyptic number.

It is an amenable number.

12220031021221 is a deficient number, since it is larger than the sum of its proper divisors (118607077979).

12220031021221 is a wasteful number, since it uses less digits than its factorization.

12220031021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219237179.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12220031021221 its reverse (12212013002221), we get a palindrome (24432044023442).

The spelling of 12220031021221 in words is "twelve trillion, two hundred twenty billion, thirty-one million, twenty-one thousand, two hundred twenty-one".