22221222000220 has 24 divisors (see below), whose sum is σ = 46664716065408. Its totient is φ = 8888460254400.

The previous prime is 22221222000217. The next prime is 22221222000227. The reversal of 22221222000220 is 2200022212222.

It is a super-2 number, since 2×22221222000220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221222000227) 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, 5281650 + ... + 8505190.

It is an arithmetic number, because the mean of its divisors is an integer number (1944363169392).

Almost surely, 2^{22221222000220} is an apocalyptic number.

22221222000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221222000220 is an abundant number, since it is smaller than the sum of its proper divisors (24443494065188).

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

22221222000220 is a wasteful number, since it uses less digits than its factorization.

22221222000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568221 (or 3568219 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22221222000220 its reverse (2200022212222), we get a palindrome (24421244212442).

The spelling of 22221222000220 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty", and thus it is an aban number.