22211000122220 has 72 divisors (see below), whose sum is σ = 58432015739664. Its totient is φ = 7029415419264.

The previous prime is 22211000122193. The next prime is 22211000122229. The reversal of 22211000122220 is 2222100011222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22211000122229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 871690562 + ... + 871716041.

It is an arithmetic number, because the mean of its divisors is an integer number (811555774162).

Almost surely, 2^{22211000122220} is an apocalyptic number.

22211000122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211000122220 is an abundant number, since it is smaller than the sum of its proper divisors (36221015617444).

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

22211000122220 is a wasteful number, since it uses less digits than its factorization.

22211000122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743406639 (or 1743406630 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22211000122220 its reverse (2222100011222), we get a palindrome (24433100133442).

The spelling of 22211000122220 in words is "twenty-two trillion, two hundred eleven billion, one hundred twenty-two thousand, two hundred twenty".