2221213134 has 16 divisors (see below), whose sum is σ = 5077058688. Its totient is φ = 634632312.

The previous prime is 2221213133. The next prime is 2221213157. The reversal of 2221213134 is 4313121222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221213134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221213133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26442972 + ... + 26443055.

It is an arithmetic number, because the mean of its divisors is an integer number (317316168).

Almost surely, 2^2221213134 is an apocalyptic number.

2221213134 is an abundant number, since it is smaller than the sum of its proper divisors (2855845554).

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

2221213134 is a wasteful number, since it uses less digits than its factorization.

2221213134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52886039.

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

The square root of 2221213134 is about 47129.7478669258. The cubic root of 2221213134 is about 1304.7583281430.

Adding to 2221213134 its reverse (4313121222), we get a palindrome (6534334356).

The spelling of 2221213134 in words is "two billion, two hundred twenty-one million, two hundred thirteen thousand, one hundred thirty-four".