11210001989 has 2 divisors, whose sum is σ = 11210001990. Its totient is φ = 11210001988.

The previous prime is 11210001973. The next prime is 11210002043. The reversal of 11210001989 is 98910001211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9237132100 + 1972869889 = 96110^2 + 44417^2 .

It is a cyclic number.

It is not a de Polignac number, because 11210001989 - 2⁴ = 11210001973 is a prime.

It is a super-2 number, since 2×11210001989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11210001389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605000994 + 5605000995.

It is an arithmetic number, because the mean of its divisors is an integer number (5605000995).

Almost surely, 2^11210001989 is an apocalyptic number.

It is an amenable number.

11210001989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11210001989 is an equidigital number, since it uses as much as digits as its factorization.

11210001989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 11210001989 in words is "eleven billion, two hundred ten million, one thousand, nine hundred eighty-nine".