2222021101220 has 24 divisors (see below), whose sum is σ = 4667474697144. Its totient is φ = 888574081536.

The previous prime is 2222021101219. The next prime is 2222021101249. The reversal of 2222021101220 is 221011202222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 143331902464 + 2078689198756 = 378592^2 + 1441766^2 .

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, 14569679 + ... + 14721398.

It is an arithmetic number, because the mean of its divisors is an integer number (194478112381).

Almost surely, 2^{2222021101220} is an apocalyptic number.

2222021101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222021101220 is an abundant number, since it is smaller than the sum of its proper divisors (2445453595924).

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

2222021101220 is a wasteful number, since it uses less digits than its factorization.

2222021101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29294879 (or 29294877 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2222021101220 its reverse (221011202222), we get a palindrome (2443032303442).

The spelling of 2222021101220 in words is "two trillion, two hundred twenty-two billion, twenty-one million, one hundred one thousand, two hundred twenty".