22142443112221 has 4 divisors (see below), whose sum is σ = 22142575993312. Its totient is φ = 22142310231132.

The previous prime is 22142443112131. The next prime is 22142443112249. The reversal of 22142443112221 is 12221134424122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22142443112221 - 2⁷ = 22142443112093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142443112281) 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, 66190281 + ... + 66523966.

It is an arithmetic number, because the mean of its divisors is an integer number (5535643998328).

Almost surely, 2^{22142443112221} is an apocalyptic number.

It is an amenable number.

22142443112221 is a deficient number, since it is larger than the sum of its proper divisors (132881091).

22142443112221 is a wasteful number, since it uses less digits than its factorization.

22142443112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132881090.

The product of its digits is 12288, while the sum is 31.

Adding to 22142443112221 its reverse (12221134424122), we get a palindrome (34363577536343).

The spelling of 22142443112221 in words is "twenty-two trillion, one hundred forty-two billion, four hundred forty-three million, one hundred twelve thousand, two hundred twenty-one".