2147222405 has 4 divisors (see below), whose sum is σ = 2576666892. Its totient is φ = 1717777920.

The previous prime is 2147222351. The next prime is 2147222423. The reversal of 2147222405 is 5042227412.

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 616926244 + 1530296161 = 24838^2 + 39119^2 .

It is not a de Polignac number, because 2147222405 - 2²² = 2143028101 is a prime.

It is a super-2 number, since 2×2147222405² = 9221128113067968050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 214722236 + ... + 214722245.

It is an arithmetic number, because the mean of its divisors is an integer number (644166723).

Almost surely, 2^2147222405 is an apocalyptic number.

It is an amenable number.

2147222405 is a deficient number, since it is larger than the sum of its proper divisors (429444487).

2147222405 is an equidigital number, since it uses as much as digits as its factorization.

2147222405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429444486.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 2147222405 is about 46338.1312204107. The cubic root of 2147222405 is about 1290.1068366938.

Adding to 2147222405 its reverse (5042227412), we get a palindrome (7189449817).

The spelling of 2147222405 in words is "two billion, one hundred forty-seven million, two hundred twenty-two thousand, four hundred five".