11221001001031 has 2 divisors, whose sum is σ = 11221001001032. Its totient is φ = 11221001001030.

The previous prime is 11221001000999. The next prime is 11221001001061. The reversal of 11221001001031 is 13010010012211.

It is a happy number.

11221001001031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11221001001031 - 2⁵ = 11221001000999 is a prime.

It is a super-2 number, since 2×11221001001031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221001001061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610500500515 + 5610500500516.

It is an arithmetic number, because the mean of its divisors is an integer number (5610500500516).

Almost surely, 2^{11221001001031} is an apocalyptic number.

11221001001031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221001001031 is an equidigital number, since it uses as much as digits as its factorization.

11221001001031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11221001001031 its reverse (13010010012211), we get a palindrome (24231011013242).

The spelling of 11221001001031 in words is "eleven trillion, two hundred twenty-one billion, one million, one thousand, thirty-one".