22142204111421 has 18 divisors (see below), whose sum is σ = 33755105256990. Its totient is φ = 13984549963056.

The previous prime is 22142204111353. The next prime is 22142204111473. The reversal of 22142204111421 is 12411140224122.

22142204111421 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 220 + 4 + 1 + 11 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12412726848900 + 9729477262521 = 3523170^2 + 3119211^2 .

It is not a de Polignac number, because 22142204111421 - 2⁴² = 17744157600317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142204110421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3407538166 + ... + 3407544663.

Almost surely, 2^{22142204111421} is an apocalyptic number.

It is an amenable number.

22142204111421 is a deficient number, since it is larger than the sum of its proper divisors (11612901145569).

22142204111421 is a wasteful number, since it uses less digits than its factorization.

22142204111421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815082873 (or 6815082851 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

Adding to 22142204111421 its reverse (12411140224122), we get a palindrome (34553344335543).

The spelling of 22142204111421 in words is "twenty-two trillion, one hundred forty-two billion, two hundred four million, one hundred eleven thousand, four hundred twenty-one".