221212020022013 has 2 divisors, whose sum is σ = 221212020022014. Its totient is φ = 221212020022012.

The previous prime is 221212020021953. The next prime is 221212020022027. The reversal of 221212020022013 is 310220020212122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220623580680409 + 588439341604 = 14853403^2 + 767098^2 .

It is a cyclic number.

It is not a de Polignac number, because 221212020022013 - 2²⁰ = 221212018973437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221212010022013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110606010011006 + 110606010011007.

It is an arithmetic number, because the mean of its divisors is an integer number (110606010011007).

Almost surely, 2^{221212020022013} is an apocalyptic number.

It is an amenable number.

221212020022013 is a deficient number, since it is larger than the sum of its proper divisors (1).

221212020022013 is an equidigital number, since it uses as much as digits as its factorization.

221212020022013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221212020022013 its reverse (310220020212122), we get a palindrome (531432040234135).

The spelling of 221212020022013 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty million, twenty-two thousand, thirteen".