221220122332 has 12 divisors (see below), whose sum is σ = 422329324536. Its totient is φ = 100554601040.

The previous prime is 221220122293. The next prime is 221220122339. The reversal of 221220122332 is 233221022122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220122339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513864983 + ... + 2513865070.

It is an arithmetic number, because the mean of its divisors is an integer number (35194110378).

Almost surely, 2^221220122332 is an apocalyptic number.

221220122332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221220122332 is a deficient number, since it is larger than the sum of its proper divisors (201109202204).

221220122332 is a wasteful number, since it uses less digits than its factorization.

221220122332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027730068 (or 5027730066 counting only the distinct ones).

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

Adding to 221220122332 its reverse (233221022122), we get a palindrome (454441144454).

The spelling of 221220122332 in words is "two hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, three hundred thirty-two".