211110202100989 has 2 divisors, whose sum is σ = 211110202100990. Its totient is φ = 211110202100988.

The previous prime is 211110202100971. The next prime is 211110202101023. The reversal of 211110202100989 is 989001202011112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129139541425764 + 81970660675225 = 11363958^2 + 9053765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211110202100989 is a prime.

It is a super-2 number, since 2×211110202100989² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211110202107989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555101050494 + 105555101050495.

It is an arithmetic number, because the mean of its divisors is an integer number (105555101050495).

Almost surely, 2^{211110202100989} is an apocalyptic number.

It is an amenable number.

211110202100989 is a deficient number, since it is larger than the sum of its proper divisors (1).

211110202100989 is an equidigital number, since it uses as much as digits as its factorization.

211110202100989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 211110202100989 in words is "two hundred eleven trillion, one hundred ten billion, two hundred two million, one hundred thousand, nine hundred eighty-nine".