221422402211 has 4 divisors (see below), whose sum is σ = 221423973624. Its totient is φ = 221420830800.

The previous prime is 221422402207. The next prime is 221422402219. The reversal of 221422402211 is 112204224122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112204224122 = 2 ⋅56102112061.

It is a cyclic number.

It is not a de Polignac number, because 221422402211 - 2² = 221422402207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221422402219) 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, 550970 + ... + 863951.

It is an arithmetic number, because the mean of its divisors is an integer number (55355993406).

Almost surely, 2^221422402211 is an apocalyptic number.

221422402211 is a deficient number, since it is larger than the sum of its proper divisors (1571413).

221422402211 is a wasteful number, since it uses less digits than its factorization.

221422402211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571412.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221422402211 its reverse (112204224122), we get a palindrome (333626626333).

The spelling of 221422402211 in words is "two hundred twenty-one billion, four hundred twenty-two million, four hundred two thousand, two hundred eleven".