21220122220007 has 2 divisors, whose sum is σ = 21220122220008. Its totient is φ = 21220122220006.

The previous prime is 21220122219997. The next prime is 21220122220019. The reversal of 21220122220007 is 70002222102212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21220122220007 - 2¹⁶ = 21220122154471 is a prime.

It is a super-2 number, since 2×21220122220007² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21220122220057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610061110003 + 10610061110004.

It is an arithmetic number, because the mean of its divisors is an integer number (10610061110004).

Almost surely, 2^{21220122220007} is an apocalyptic number.

21220122220007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220122220007 is an equidigital number, since it uses as much as digits as its factorization.

21220122220007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 21220122220007 its reverse (70002222102212), we get a palindrome (91222344322219).

The spelling of 21220122220007 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, two hundred twenty thousand, seven".