22332220220420 has 96 divisors (see below), whose sum is σ = 53403818178816. Its totient is φ = 7765060723200.

The previous prime is 22332220220413. The next prime is 22332220220467. The reversal of 22332220220420 is 2402202223322.

It is a self number, because there is not a number n which added to its sum of digits gives 22332220220420.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14003510 + ... + 15516530.

It is an arithmetic number, because the mean of its divisors is an integer number (556289772696).

Almost surely, 2^{22332220220420} is an apocalyptic number.

22332220220420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22332220220420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26701909089408).

22332220220420 is an abundant number, since it is smaller than the sum of its proper divisors (31071597958396).

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

22332220220420 is a wasteful number, since it uses less digits than its factorization.

22332220220420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515981 (or 1515979 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 22332220220420 its reverse (2402202223322), we get a palindrome (24734422443742).

The spelling of 22332220220420 in words is "twenty-two trillion, three hundred thirty-two billion, two hundred twenty million, two hundred twenty thousand, four hundred twenty".