22143111223201 has 4 divisors (see below), whose sum is σ = 22143124003732. Its totient is φ = 22143098442672.

The previous prime is 22143111223169. The next prime is 22143111223223. The reversal of 22143111223201 is 10232211134122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13001800851601 + 9141310371600 = 3605801^2 + 3023460^2 .

It is a cyclic number.

It is not a de Polignac number, because 22143111223201 - 2⁵ = 22143111223169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22143111253201) 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, 3290070 + ... + 7423663.

It is an arithmetic number, because the mean of its divisors is an integer number (5535781000933).

Almost surely, 2^{22143111223201} is an apocalyptic number.

It is an amenable number.

22143111223201 is a deficient number, since it is larger than the sum of its proper divisors (12780531).

22143111223201 is a wasteful number, since it uses less digits than its factorization.

22143111223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12780530.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 22143111223201 its reverse (10232211134122), we get a palindrome (32375322357323).

The spelling of 22143111223201 in words is "twenty-two trillion, one hundred forty-three billion, one hundred eleven million, two hundred twenty-three thousand, two hundred one".