11221102031 has 2 divisors, whose sum is σ = 11221102032. Its totient is φ = 11221102030.

The previous prime is 11221102027. The next prime is 11221102033. The reversal of 11221102031 is 13020112211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11221102031 - 2² = 11221102027 is a prime.

It is a super-2 number, since 2×11221102031² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 11221102033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11221101997 and 11221102015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221102033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610551015 + 5610551016.

It is an arithmetic number, because the mean of its divisors is an integer number (5610551016).

Almost surely, 2^11221102031 is an apocalyptic number.

11221102031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221102031 is an equidigital number, since it uses as much as digits as its factorization.

11221102031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11221102031 its reverse (13020112211), we get a palindrome (24241214242).

The spelling of 11221102031 in words is "eleven billion, two hundred twenty-one million, one hundred two thousand, thirty-one".