11122221121031 has 2 divisors, whose sum is σ = 11122221121032. Its totient is φ = 11122221121030.

The previous prime is 11122221121001. The next prime is 11122221121127. The reversal of 11122221121031 is 13012112222111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11122221121031 - 2¹⁴ = 11122221104647 is a prime.

It is a super-2 number, since 2×11122221121031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11122221120994 and 11122221121012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122221121001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561110560515 + 5561110560516.

It is an arithmetic number, because the mean of its divisors is an integer number (5561110560516).

Almost surely, 2^{11122221121031} is an apocalyptic number.

11122221121031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122221121031 is an equidigital number, since it uses as much as digits as its factorization.

11122221121031 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 11122221121031 its reverse (13012112222111), we get a palindrome (24134333343142).

The spelling of 11122221121031 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, thirty-one".