222011671997 has 2 divisors, whose sum is σ = 222011671998. Its totient is φ = 222011671996.

The previous prime is 222011671969. The next prime is 222011672011. The reversal of 222011671997 is 799176110222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202584608836 + 19427063161 = 450094^2 + 139381^2 .

It is a cyclic number.

It is not a de Polignac number, because 222011671997 - 2¹² = 222011667901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222011671397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111005835998 + 111005835999.

It is an arithmetic number, because the mean of its divisors is an integer number (111005835999).

Almost surely, 2^222011671997 is an apocalyptic number.

It is an amenable number.

222011671997 is a deficient number, since it is larger than the sum of its proper divisors (1).

222011671997 is an equidigital number, since it uses as much as digits as its factorization.

222011671997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 222011671997 in words is "two hundred twenty-two billion, eleven million, six hundred seventy-one thousand, nine hundred ninety-seven".