22220202111220 has 24 divisors (see below), whose sum is σ = 46698291071208. Its totient is φ = 8881249104000.

The previous prime is 22220202111199. The next prime is 22220202111227. The reversal of 22220202111220 is 2211120202222.

It can be written as a sum of positive squares in 4 ways, for example, as 436344798096 + 21783857313124 = 660564^2 + 4667318^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220202111227) 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, 426957111 + ... + 427009150.

It is an arithmetic number, because the mean of its divisors is an integer number (1945762127967).

Almost surely, 2^{22220202111220} is an apocalyptic number.

22220202111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220202111220 is an abundant number, since it is smaller than the sum of its proper divisors (24478088959988).

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

22220202111220 is a wasteful number, since it uses less digits than its factorization.

22220202111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853967571 (or 853967569 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22220202111220 its reverse (2211120202222), we get a palindrome (24431322313442).

The spelling of 22220202111220 in words is "twenty-two trillion, two hundred twenty billion, two hundred two million, one hundred eleven thousand, two hundred twenty".