2221202202212 has 36 divisors (see below), whose sum is σ = 4566502729404. Its totient is φ = 942518606400.

The previous prime is 2221202202161. The next prime is 2221202202251. The reversal of 2221202202212 is 2122022021222.

It can be written as a sum of positive squares in 2 ways, for example, as 1139885063716 + 1081317138496 = 1067654^2 + 1039864^2 .

It is a super-2 number, since 2×2221202202212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56082503 + ... + 56122094.

It is an arithmetic number, because the mean of its divisors is an integer number (126847298039).

Almost surely, 2^{2221202202212} is an apocalyptic number.

It is an amenable number.

2221202202212 is an abundant number, since it is smaller than the sum of its proper divisors (2345300527192).

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

2221202202212 is a wasteful number, since it uses less digits than its factorization.

2221202202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112204716 (or 112204707 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2221202202212 its reverse (2122022021222), we get a palindrome (4343224223434).

The spelling of 2221202202212 in words is "two trillion, two hundred twenty-one billion, two hundred two million, two hundred two thousand, two hundred twelve".