22221210222222 has 64 divisors (see below), whose sum is σ = 48525054559488. Its totient is φ = 6727811616000.

The previous prime is 22221210222181. The next prime is 22221210222307. The reversal of 22221210222222 is 22222201212222.

It is a junction number, because it is equal to n+sod(n) for n = 22221210222192 and 22221210222201.

It is a congruent number.

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, 407544322 + ... + 407598842.

It is an arithmetic number, because the mean of its divisors is an integer number (758203977492).

Almost surely, 2^{22221210222222} is an apocalyptic number.

22221210222222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221210222222 is an abundant number, since it is smaller than the sum of its proper divisors (26303844337266).

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

22221210222222 is a wasteful number, since it uses less digits than its factorization.

22221210222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59825.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 22221210222222 its reverse (22222201212222), we get a palindrome (44443411434444).

The spelling of 22221210222222 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, two hundred twenty-two".