221323216130 has 16 divisors (see below), whose sum is σ = 398392414200. Its totient is φ = 88526925312.

The previous prime is 221323216129. The next prime is 221323216133. The reversal of 221323216130 is 31612323122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 167401267609 + 53921948521 = 409147^2 + 232211^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221323216130.

It is not an unprimeable number, because it can be changed into a prime (221323216133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127346 + ... + 677394.

Almost surely, 2^221323216130 is an apocalyptic number.

221323216130 is a deficient number, since it is larger than the sum of its proper divisors (177069198070).

221323216130 is a wasteful number, since it uses less digits than its factorization.

221323216130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590293.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 221323216130 its reverse (31612323122), we get a palindrome (252935539252).

The spelling of 221323216130 in words is "two hundred twenty-one billion, three hundred twenty-three million, two hundred sixteen thousand, one hundred thirty".