222220121022 has 12 divisors (see below), whose sum is σ = 481476928920. Its totient is φ = 74073373668.

The previous prime is 222220121003. The next prime is 222220121047. The reversal of 222220121022 is 220121022222.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12345562279 = 222220121022 / (2 + 2 + 2 + 2 + 2 + 0 + 1 + 2 + 1 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 222220120986 and 222220121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6172781122 + ... + 6172781157.

It is an arithmetic number, because the mean of its divisors is an integer number (40123077410).

Almost surely, 2^222220121022 is an apocalyptic number.

222220121022 is an abundant number, since it is smaller than the sum of its proper divisors (259256807898).

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

222220121022 is a wasteful number, since it uses less digits than its factorization.

222220121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12345562287 (or 12345562284 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222220121022 its reverse (220121022222), we get a palindrome (442341143244).

It can be divided in two parts, 222 and 220121022, that multiplied together give a palindrome (48866866884).

The spelling of 222220121022 in words is "two hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, twenty-two".