2236121489 has 4 divisors (see below), whose sum is σ = 2555567424. Its totient is φ = 1916675556.

The previous prime is 2236121477. The next prime is 2236121501. The reversal of 2236121489 is 9841216322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2236121477) and next prime (2236121501).

It is a cyclic number.

It is not a de Polignac number, because 2236121489 - 2¹⁶ = 2236055953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2236121089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159722957 + ... + 159722970.

It is an arithmetic number, because the mean of its divisors is an integer number (638891856).

Almost surely, 2^2236121489 is an apocalyptic number.

It is an amenable number.

2236121489 is a deficient number, since it is larger than the sum of its proper divisors (319445935).

2236121489 is an equidigital number, since it uses as much as digits as its factorization.

2236121489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319445934.

The product of its digits is 41472, while the sum is 38.

The square root of 2236121489 is about 47287.6462619995. The cubic root of 2236121489 is about 1307.6709171670.

The spelling of 2236121489 in words is "two billion, two hundred thirty-six million, one hundred twenty-one thousand, four hundred eighty-nine".