22644111221287 has 2 divisors, whose sum is σ = 22644111221288. Its totient is φ = 22644111221286.

The previous prime is 22644111221213. The next prime is 22644111221317. The reversal of 22644111221287 is 78212211144622.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22644111221287 - 2⁴³ = 13848018199079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22644111221687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11322055610643 + 11322055610644.

It is an arithmetic number, because the mean of its divisors is an integer number (11322055610644).

Almost surely, 2^{22644111221287} is an apocalyptic number.

22644111221287 is a deficient number, since it is larger than the sum of its proper divisors (1).

22644111221287 is an equidigital number, since it uses as much as digits as its factorization.

22644111221287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 43.

The spelling of 22644111221287 in words is "twenty-two trillion, six hundred forty-four billion, one hundred eleven million, two hundred twenty-one thousand, two hundred eighty-seven".