21220222012007 has 2 divisors, whose sum is σ = 21220222012008. Its totient is φ = 21220222012006.

The previous prime is 21220222011997. The next prime is 21220222012037. The reversal of 21220222012007 is 70021022202212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21220222012007 - 2¹⁰ = 21220222010983 is a prime.

It is a super-2 number, since 2×21220222012007² (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 (21220222012037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610111006003 + 10610111006004.

It is an arithmetic number, because the mean of its divisors is an integer number (10610111006004).

Almost surely, 2^{21220222012007} is an apocalyptic number.

21220222012007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220222012007 is an equidigital number, since it uses as much as digits as its factorization.

21220222012007 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 21220222012007 its reverse (70021022202212), we get a palindrome (91241244214219).

The spelling of 21220222012007 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, twelve thousand, seven".