1400513221 has 2 divisors, whose sum is σ = 1400513222. Its totient is φ = 1400513220.

The previous prime is 1400513207. The next prime is 1400513333. The reversal of 1400513221 is 1223150041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1223250625 + 177262596 = 34975^2 + 13314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400513221 - 2¹¹ = 1400511173 is a prime.

It is a super-2 number, since 2×1400513221² = 3922874564391589682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400517221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700256610 + 700256611.

It is an arithmetic number, because the mean of its divisors is an integer number (700256611).

Almost surely, 2^1400513221 is an apocalyptic number.

It is an amenable number.

1400513221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400513221 is an equidigital number, since it uses as much as digits as its factorization.

1400513221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1400513221 is about 37423.4314434152. The cubic root of 1400513221 is about 1118.8256241088.

Adding to 1400513221 its reverse (1223150041), we get a palindrome (2623663262).

The spelling of 1400513221 in words is "one billion, four hundred million, five hundred thirteen thousand, two hundred twenty-one".