20111222211007 has 2 divisors, whose sum is σ = 20111222211008. Its totient is φ = 20111222211006.

The previous prime is 20111222210987. The next prime is 20111222211109. The reversal of 20111222211007 is 70011222211102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20111222211007 - 2¹⁵ = 20111222178239 is a prime.

It is a super-2 number, since 2×20111222211007² (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 (20111222511007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055611105503 + 10055611105504.

It is an arithmetic number, because the mean of its divisors is an integer number (10055611105504).

Almost surely, 2^{20111222211007} is an apocalyptic number.

20111222211007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111222211007 is an equidigital number, since it uses as much as digits as its factorization.

20111222211007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 20111222211007 its reverse (70011222211102), we get a palindrome (90122444422109).

The spelling of 20111222211007 in words is "twenty trillion, one hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand, seven".