102111221489 has 2 divisors, whose sum is σ = 102111221490. Its totient is φ = 102111221488.

The previous prime is 102111221483. The next prime is 102111221503. The reversal of 102111221489 is 984122111201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101136720400 + 974501089 = 318020^2 + 31217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102111221489 is a prime.

It is a super-3 number, since 3×102111221489³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (102111221483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055610744 + 51055610745.

It is an arithmetic number, because the mean of its divisors is an integer number (51055610745).

Almost surely, 2^102111221489 is an apocalyptic number.

It is an amenable number.

102111221489 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111221489 is an equidigital number, since it uses as much as digits as its factorization.

102111221489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 102111221489 in words is "one hundred two billion, one hundred eleven million, two hundred twenty-one thousand, four hundred eighty-nine".