111000230221997 has 2 divisors, whose sum is σ = 111000230221998. Its totient is φ = 111000230221996.

The previous prime is 111000230221973. The next prime is 111000230222039. The reversal of 111000230221997 is 799122032000111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109061491449001 + 1938738772996 = 10443251^2 + 1392386^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000230221997 - 2¹⁶ = 111000230156461 is a prime.

It is a super-2 number, since 2×111000230221997² (a number of 29 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 111000230221997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111000230221697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500115110998 + 55500115110999.

It is an arithmetic number, because the mean of its divisors is an integer number (55500115110999).

Almost surely, 2^{111000230221997} is an apocalyptic number.

It is an amenable number.

111000230221997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000230221997 is an equidigital number, since it uses as much as digits as its factorization.

111000230221997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 111000230221997 in words is "one hundred eleven trillion, two hundred thirty million, two hundred twenty-one thousand, nine hundred ninety-seven".