111222010997 has 2 divisors, whose sum is σ = 111222010998. Its totient is φ = 111222010996.

The previous prime is 111222010981. The next prime is 111222011023. The reversal of 111222010997 is 799010222111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92923767556 + 18298243441 = 304834^2 + 135271^2 .

It is an emirp because it is prime and its reverse (799010222111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111222010997 - 2⁴ = 111222010981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111222010967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611005498 + 55611005499.

It is an arithmetic number, because the mean of its divisors is an integer number (55611005499).

Almost surely, 2^111222010997 is an apocalyptic number.

It is an amenable number.

111222010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222010997 is an equidigital number, since it uses as much as digits as its factorization.

111222010997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 111222010997 in words is "one hundred eleven billion, two hundred twenty-two million, ten thousand, nine hundred ninety-seven".