2012220111001 has 2 divisors, whose sum is σ = 2012220111002. Its totient is φ = 2012220111000.

The previous prime is 2012220110983. The next prime is 2012220111007. The reversal of 2012220111001 is 1001110222102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1782088832601 + 230131278400 = 1334949^2 + 479720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012220111001 is a prime.

It is a super-2 number, since 2×2012220111001² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2012220111007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006110055500 + 1006110055501.

It is an arithmetic number, because the mean of its divisors is an integer number (1006110055501).

Almost surely, 2^{2012220111001} is an apocalyptic number.

It is an amenable number.

2012220111001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012220111001 is an equidigital number, since it uses as much as digits as its factorization.

2012220111001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2012220111001 its reverse (1001110222102), we get a palindrome (3013330333103).

The spelling of 2012220111001 in words is "two trillion, twelve billion, two hundred twenty million, one hundred eleven thousand, one".