21124432223267 has 2 divisors, whose sum is σ = 21124432223268. Its totient is φ = 21124432223266.

The previous prime is 21124432223231. The next prime is 21124432223287. The reversal of 21124432223267 is 76232223442112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21124432223267 - 2²⁴ = 21124415446051 is a prime.

It is not a weakly prime, because it can be changed into another prime (21124432223207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562216111633 + 10562216111634.

It is an arithmetic number, because the mean of its divisors is an integer number (10562216111634).

Almost surely, 2^{21124432223267} is an apocalyptic number.

21124432223267 is a deficient number, since it is larger than the sum of its proper divisors (1).

21124432223267 is an equidigital number, since it uses as much as digits as its factorization.

21124432223267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 41.

Adding to 21124432223267 its reverse (76232223442112), we get a palindrome (97356655665379).

The spelling of 21124432223267 in words is "twenty-one trillion, one hundred twenty-four billion, four hundred thirty-two million, two hundred twenty-three thousand, two hundred sixty-seven".