22404111133221 has 8 divisors (see below), whose sum is σ = 33191275752960. Its totient is φ = 14936074088796.

The previous prime is 22404111133211. The next prime is 22404111133231. The reversal of 22404111133221 is 12233111140422.

22404111133221 is a `hidden beast` number, since 2 + 2 + 404 + 1 + 1 + 1 + 1 + 33 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (22404111133211) and next prime (22404111133231).

It is not a de Polignac number, because 22404111133221 - 2¹⁵ = 22404111100453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 829781893823 = 22404111133221 / (2 + 2 + 4 + 0 + 4 + 1 + 1 + 1 + 1 + 3 + 3 + 2 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22404111133211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414890946885 + ... + 414890946938.

It is an arithmetic number, because the mean of its divisors is an integer number (4148909469120).

Almost surely, 2^{22404111133221} is an apocalyptic number.

It is an amenable number.

22404111133221 is a deficient number, since it is larger than the sum of its proper divisors (10787164619739).

22404111133221 is an equidigital number, since it uses as much as digits as its factorization.

22404111133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829781893832 (or 829781893826 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 22404111133221 its reverse (12233111140422), we get a palindrome (34637222273643).

The spelling of 22404111133221 in words is "twenty-two trillion, four hundred four billion, one hundred eleven million, one hundred thirty-three thousand, two hundred twenty-one".