2221131212022 has 64 divisors (see below), whose sum is σ = 4700844910080. Its totient is φ = 697694570496.

The previous prime is 2221131211993. The next prime is 2221131212057. The reversal of 2221131212022 is 2202121311222.

It is a super-2 number, since 2×2221131212022² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221131212022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142308543 + ... + 142324149.

It is an arithmetic number, because the mean of its divisors is an integer number (73450701720).

Almost surely, 2^{2221131212022} is an apocalyptic number.

2221131212022 is an abundant number, since it is smaller than the sum of its proper divisors (2479713698058).

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

2221131212022 is a wasteful number, since it uses less digits than its factorization.

2221131212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22165.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2221131212022 its reverse (2202121311222), we get a palindrome (4423252523244).

The spelling of 2221131212022 in words is "two trillion, two hundred twenty-one billion, one hundred thirty-one million, two hundred twelve thousand, twenty-two".