110202011989 has 2 divisors, whose sum is σ = 110202011990. Its totient is φ = 110202011988.

The previous prime is 110202011903. The next prime is 110202012001. The reversal of 110202011989 is 989110202011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99324564964 + 10877447025 = 315158^2 + 104295^2 .

It is a cyclic number.

It is not a de Polignac number, because 110202011989 - 2³³ = 101612077397 is a prime.

It is a super-2 number, since 2×110202011989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110202011189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55101005994 + 55101005995.

It is an arithmetic number, because the mean of its divisors is an integer number (55101005995).

Almost surely, 2^110202011989 is an apocalyptic number.

It is an amenable number.

110202011989 is a deficient number, since it is larger than the sum of its proper divisors (1).

110202011989 is an equidigital number, since it uses as much as digits as its factorization.

110202011989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 110202011989 in words is "one hundred ten billion, two hundred two million, eleven thousand, nine hundred eighty-nine".