221311200122 has 8 divisors (see below), whose sum is σ = 335696764500. Its totient is φ = 109412278624.

The previous prime is 221311200107. The next prime is 221311200127. The reversal of 221311200122 is 221002113122.

It can be written as a sum of positive squares in 2 ways, for example, as 217073059921 + 4238140201 = 465911^2 + 65101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221311200122.

It is not an unprimeable number, because it can be changed into a prime (221311200127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621660497 + ... + 621660852.

Almost surely, 2^221311200122 is an apocalyptic number.

221311200122 is a deficient number, since it is larger than the sum of its proper divisors (114385564378).

221311200122 is a wasteful number, since it uses less digits than its factorization.

221311200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243321440.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221311200122 its reverse (221002113122), we get a palindrome (442313313244).

The spelling of 221311200122 in words is "two hundred twenty-one billion, three hundred eleven million, two hundred thousand, one hundred twenty-two".