22221210797 has 2 divisors, whose sum is σ = 22221210798. Its totient is φ = 22221210796.

The previous prime is 22221210761. The next prime is 22221210899. The reversal of 22221210797 is 79701212222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14060979241 + 8160231556 = 118579^2 + 90334^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221210797 - 2⁸ = 22221210541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221210997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110605398 + 11110605399.

It is an arithmetic number, because the mean of its divisors is an integer number (11110605399).

Almost surely, 2^22221210797 is an apocalyptic number.

It is an amenable number.

22221210797 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221210797 is an equidigital number, since it uses as much as digits as its factorization.

22221210797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 22221210797 in words is "twenty-two billion, two hundred twenty-one million, two hundred ten thousand, seven hundred ninety-seven".