21112220001589 has 2 divisors, whose sum is σ = 21112220001590. Its totient is φ = 21112220001588.

The previous prime is 21112220001581. The next prime is 21112220001637. The reversal of 21112220001589 is 98510002221112.

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., 17244834236100 + 3867385765489 = 4152690^2 + 1966567^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112220001589 - 2³ = 21112220001581 is a prime.

It is a super-4 number, since 4×21112220001589⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112220001581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556110000794 + 10556110000795.

It is an arithmetic number, because the mean of its divisors is an integer number (10556110000795).

Almost surely, 2^{21112220001589} is an apocalyptic number.

It is an amenable number.

21112220001589 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112220001589 is an equidigital number, since it uses as much as digits as its factorization.

21112220001589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 34.

The spelling of 21112220001589 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, one thousand, five hundred eighty-nine".