21222052413607 has 2 divisors, whose sum is σ = 21222052413608. Its totient is φ = 21222052413606.

The previous prime is 21222052413481. The next prime is 21222052413629. The reversal of 21222052413607 is 70631425022212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21222052413607 - 2⁷ = 21222052413479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222052413647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611026206803 + 10611026206804.

It is an arithmetic number, because the mean of its divisors is an integer number (10611026206804).

Almost surely, 2^{21222052413607} is an apocalyptic number.

21222052413607 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222052413607 is an equidigital number, since it uses as much as digits as its factorization.

21222052413607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 21222052413607 its reverse (70631425022212), we get a palindrome (91853477435819).

The spelling of 21222052413607 in words is "twenty-one trillion, two hundred twenty-two billion, fifty-two million, four hundred thirteen thousand, six hundred seven".