22301143221 has 16 divisors (see below), whose sum is σ = 34333034624. Its totient is φ = 12612132864.

The previous prime is 22301143217. The next prime is 22301143253. The reversal of 22301143221 is 12234110322.

It is not a de Polignac number, because 22301143221 - 2² = 22301143217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22301143021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5471980 + ... + 5476053.

It is an arithmetic number, because the mean of its divisors is an integer number (2145814664).

Almost surely, 2^22301143221 is an apocalyptic number.

22301143221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22301143221 is a deficient number, since it is larger than the sum of its proper divisors (12031891403).

22301143221 is a wasteful number, since it uses less digits than its factorization.

22301143221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10948140.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 22301143221 its reverse (12234110322), we get a palindrome (34535253543).

The spelling of 22301143221 in words is "twenty-two billion, three hundred one million, one hundred forty-three thousand, two hundred twenty-one".