2142222385 has 4 divisors (see below), whose sum is σ = 2570666868. Its totient is φ = 1713777904.

The previous prime is 2142222359. The next prime is 2142222403. The reversal of 2142222385 is 5832222412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 581340321 + 1560882064 = 24111^2 + 39508^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142222385 - 2¹⁷ = 2142091313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214222234 + ... + 214222243.

It is an arithmetic number, because the mean of its divisors is an integer number (642666717).

Almost surely, 2^2142222385 is an apocalyptic number.

It is an amenable number.

2142222385 is a deficient number, since it is larger than the sum of its proper divisors (428444483).

2142222385 is an equidigital number, since it uses as much as digits as its factorization.

2142222385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428444482.

The product of its digits is 15360, while the sum is 31.

The square root of 2142222385 is about 46284.1483123542. The cubic root of 2142222385 is about 1289.1046779078.

Adding to 2142222385 its reverse (5832222412), we get a palindrome (7974444797).

The spelling of 2142222385 in words is "two billion, one hundred forty-two million, two hundred twenty-two thousand, three hundred eighty-five".