32222212220 has 24 divisors (see below), whose sum is σ = 73818159408. Its totient is φ = 11717168000.

The previous prime is 32222212219. The next prime is 32222212223. The reversal of 32222212220 is 2221222223.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 32222212192 and 32222212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32222212223) 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, 73232081 + ... + 73232520.

It is an arithmetic number, because the mean of its divisors is an integer number (3075756642).

Almost surely, 2^32222212220 is an apocalyptic number.

It is an amenable number.

32222212220 is an abundant number, since it is smaller than the sum of its proper divisors (41595947188).

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

32222212220 is a wasteful number, since it uses less digits than its factorization.

32222212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146464621 (or 146464619 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 32222212220 its reverse (2221222223), we get a palindrome (34443434443).

It can be divided in two parts, 32222 and 212220, that added together give a palindrome (244442).

The spelling of 32222212220 in words is "thirty-two billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty".