22131220112011 has 2 divisors, whose sum is σ = 22131220112012. Its totient is φ = 22131220112010.

The previous prime is 22131220111951. The next prime is 22131220112047. The reversal of 22131220112011 is 11021102213122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22131220112011 - 2²¹ = 22131218014859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22131220112011.

It is not a weakly prime, because it can be changed into another prime (22131220112411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065610056005 + 11065610056006.

It is an arithmetic number, because the mean of its divisors is an integer number (11065610056006).

Almost surely, 2^{22131220112011} is an apocalyptic number.

22131220112011 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131220112011 is an equidigital number, since it uses as much as digits as its factorization.

22131220112011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 22131220112011 its reverse (11021102213122), we get a palindrome (33152322325133).

The spelling of 22131220112011 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred twenty million, one hundred twelve thousand, eleven".