22001221102247 has 2 divisors, whose sum is σ = 22001221102248. Its totient is φ = 22001221102246.

The previous prime is 22001221102151. The next prime is 22001221102249. The reversal of 22001221102247 is 74220112210022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22001221102247 - 2²⁴ = 22001204325031 is a prime.

Together with 22001221102249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001221102249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000610551123 + 11000610551124.

It is an arithmetic number, because the mean of its divisors is an integer number (11000610551124).

Almost surely, 2^{22001221102247} is an apocalyptic number.

22001221102247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001221102247 is an equidigital number, since it uses as much as digits as its factorization.

22001221102247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 22001221102247 its reverse (74220112210022), we get a palindrome (96221333312269).

The spelling of 22001221102247 in words is "twenty-two trillion, one billion, two hundred twenty-one million, one hundred two thousand, two hundred forty-seven".