2221312134 has 16 divisors (see below), whose sum is σ = 4443541488. Its totient is φ = 740284512.

The previous prime is 2221312091. The next prime is 2221312153. The reversal of 2221312134 is 4312131222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221312134.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4437 + ... + 66800.

It is an arithmetic number, because the mean of its divisors is an integer number (277721343).

Almost surely, 2^2221312134 is an apocalyptic number.

2221312134 is an abundant number, since it is smaller than the sum of its proper divisors (2222229354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221312134 is a wasteful number, since it uses less digits than its factorization.

2221312134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76439.

The product of its digits is 576, while the sum is 21.

The square root of 2221312134 is about 47130.7981472837. The cubic root of 2221312134 is about 1304.7777123185. Note that the first 4 decimals are identical.

Adding to 2221312134 its reverse (4312131222), we get a palindrome (6533443356).

The spelling of 2221312134 in words is "two billion, two hundred twenty-one million, three hundred twelve thousand, one hundred thirty-four".