220221012222137 has 2 divisors, whose sum is σ = 220221012222138. Its totient is φ = 220221012222136.

The previous prime is 220221012222089. The next prime is 220221012222199. The reversal of 220221012222137 is 731222210122022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183834250985401 + 36386761236736 = 13558549^2 + 6032144^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221012222137 - 2¹⁰ = 220221012221113 is a prime.

It is a super-2 number, since 2×220221012222137² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220221012222637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110506111068 + 110110506111069.

It is an arithmetic number, because the mean of its divisors is an integer number (110110506111069).

Almost surely, 2^{220221012222137} is an apocalyptic number.

It is an amenable number.

220221012222137 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221012222137 is an equidigital number, since it uses as much as digits as its factorization.

220221012222137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 220221012222137 its reverse (731222210122022), we get a palindrome (951443222344159).

The spelling of 220221012222137 in words is "two hundred twenty trillion, two hundred twenty-one billion, twelve million, two hundred twenty-two thousand, one hundred thirty-seven".