1400221231 has 2 divisors, whose sum is σ = 1400221232. Its totient is φ = 1400221230.

The previous prime is 1400221223. The next prime is 1400221253. The reversal of 1400221231 is 1321220041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1400221231 - 2³ = 1400221223 is a prime.

It is a super-2 number, since 2×1400221231² = 3921238991486310722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400221271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700110615 + 700110616.

It is an arithmetic number, because the mean of its divisors is an integer number (700110616).

Almost surely, 2^1400221231 is an apocalyptic number.

1400221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400221231 is an equidigital number, since it uses as much as digits as its factorization.

1400221231 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 16.

The square root of 1400221231 is about 37419.5300745480. The cubic root of 1400221231 is about 1118.7478648524.

Adding to 1400221231 its reverse (1321220041), we get a palindrome (2721441272).

The spelling of 1400221231 in words is "one billion, four hundred million, two hundred twenty-one thousand, two hundred thirty-one".