1220233022221 has 8 divisors (see below), whose sum is σ = 1231471683200. Its totient is φ = 1208995158960.

The previous prime is 1220233022117. The next prime is 1220233022251. The reversal of 1220233022221 is 1222203320221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220233022221 - 2²³ = 1220224633613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220233022192 and 1220233022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220233022251) 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 7 ways as a sum of consecutive naturals, for example, 3128440 + ... + 3496798.

It is an arithmetic number, because the mean of its divisors is an integer number (153933960400).

Almost surely, 2^{1220233022221} is an apocalyptic number.

It is an amenable number.

1220233022221 is a deficient number, since it is larger than the sum of its proper divisors (11238660979).

1220233022221 is a wasteful number, since it uses less digits than its factorization.

1220233022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398859.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1220233022221 its reverse (1222203320221), we get a palindrome (2442436342442).

The spelling of 1220233022221 in words is "one trillion, two hundred twenty billion, two hundred thirty-three million, twenty-two thousand, two hundred twenty-one".