40221131 has 2 divisors, whose sum is σ = 40221132. Its totient is φ = 40221130.

The previous prime is 40221127. The next prime is 40221161. The reversal of 40221131 is 13112204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40221131 - 2² = 40221127 is a prime.

It is a super-2 number, since 2×40221131² = 3235478757838322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40221161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110565 + 20110566.

It is an arithmetic number, because the mean of its divisors is an integer number (20110566).

Almost surely, 2^40221131 is an apocalyptic number.

40221131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40221131 is an equidigital number, since it uses as much as digits as its factorization.

40221131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 40221131 is about 6342.0131661800. The cubic root of 40221131 is about 342.6242460411.

Adding to 40221131 its reverse (13112204), we get a palindrome (53333335).

The spelling of 40221131 in words is "forty million, two hundred twenty-one thousand, one hundred thirty-one".