222123122220 has 24 divisors (see below), whose sum is σ = 621944742384. Its totient is φ = 59232832576.

The previous prime is 222123122213. The next prime is 222123122231. The reversal of 222123122220 is 22221321222.

It is a super-2 number, since 2×222123122220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851025959 + ... + 1851026078.

It is an arithmetic number, because the mean of its divisors is an integer number (25914364266).

Almost surely, 2^222123122220 is an apocalyptic number.

222123122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222123122220 is an abundant number, since it is smaller than the sum of its proper divisors (399821620164).

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

222123122220 is a wasteful number, since it uses less digits than its factorization.

222123122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702052049 (or 3702052047 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 222123122220 its reverse (22221321222), we get a palindrome (244344443442).

The spelling of 222123122220 in words is "two hundred twenty-two billion, one hundred twenty-three million, one hundred twenty-two thousand, two hundred twenty".