2221001131 has 2 divisors, whose sum is σ = 2221001132. Its totient is φ = 2221001130.

The previous prime is 2221001099. The next prime is 2221001147. The reversal of 2221001131 is 1311001222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221001131 - 2⁵ = 2221001099 is a prime.

It is a super-2 number, since 2×2221001131² = 9865692047806558322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221001171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110500565 + 1110500566.

It is an arithmetic number, because the mean of its divisors is an integer number (1110500566).

Almost surely, 2^2221001131 is an apocalyptic number.

2221001131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221001131 is an equidigital number, since it uses as much as digits as its factorization.

2221001131 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 13.

The square root of 2221001131 is about 47127.4986711580. The cubic root of 2221001131 is about 1304.7168160707.

Adding to 2221001131 its reverse (1311001222), we get a palindrome (3532002353).

Subtracting from 2221001131 its reverse (1311001222), we obtain a palindrome (909999909).

The spelling of 2221001131 in words is "two billion, two hundred twenty-one million, one thousand, one hundred thirty-one".