222220122111220 has 24 divisors (see below), whose sum is σ = 477514867050144. Its totient is φ = 86820884917536.

The previous prime is 222220122111199. The next prime is 222220122111227. The reversal of 222220122111220 is 22111221022222.

It is a super-2 number, since 2×222220122111220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222220122111191 and 222220122111200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220122111227) 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, 129197744554 + ... + 129197746273.

It is an arithmetic number, because the mean of its divisors is an integer number (19896452793756).

Almost surely, 2^{222220122111220} is an apocalyptic number.

222220122111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220122111220 is an abundant number, since it is smaller than the sum of its proper divisors (255294744938924).

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

222220122111220 is a wasteful number, since it uses less digits than its factorization.

222220122111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258395490879 (or 258395490877 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222220122111220 its reverse (22111221022222), we get a palindrome (244331343133442).

The spelling of 222220122111220 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twenty".