20212222222013 has 2 divisors, whose sum is σ = 20212222222014. Its totient is φ = 20212222222012.

The previous prime is 20212222221991. The next prime is 20212222222057. The reversal of 20212222222013 is 31022222221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19576890478084 + 635331743929 = 4424578^2 + 797077^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212222222013 - 2¹² = 20212222217917 is a prime.

It is a super-2 number, since 2×20212222222013² (a number of 27 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 20212222222013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212222222063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106111111006 + 10106111111007.

It is an arithmetic number, because the mean of its divisors is an integer number (10106111111007).

Almost surely, 2^{20212222222013} is an apocalyptic number.

It is an amenable number.

20212222222013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212222222013 is an equidigital number, since it uses as much as digits as its factorization.

20212222222013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20212222222013 its reverse (31022222221202), we get a palindrome (51234444443215).

The spelling of 20212222222013 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twenty-two thousand, thirteen".