11112221122031 has 2 divisors, whose sum is σ = 11112221122032. Its totient is φ = 11112221122030.

The previous prime is 11112221122027. The next prime is 11112221122129. The reversal of 11112221122031 is 13022112221111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11112221122031 - 2² = 11112221122027 is a prime.

It is a super-2 number, since 2×11112221122031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11112221121994 and 11112221122012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112221122831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556110561015 + 5556110561016.

It is an arithmetic number, because the mean of its divisors is an integer number (5556110561016).

Almost surely, 2^{11112221122031} is an apocalyptic number.

11112221122031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112221122031 is an equidigital number, since it uses as much as digits as its factorization.

11112221122031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 11112221122031 its reverse (13022112221111), we get a palindrome (24134333343142).

The spelling of 11112221122031 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, thirty-one".