1401310221 has 16 divisors (see below), whose sum is σ = 1980557568. Its totient is φ = 878259200.

The previous prime is 1401310171. The next prime is 1401310223. The reversal of 1401310221 is 1220131041.

It is a cyclic number.

It is not a de Polignac number, because 1401310221 - 2⁷ = 1401310093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401310223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31381 + ... + 61541.

It is an arithmetic number, because the mean of its divisors is an integer number (123784848).

Almost surely, 2^1401310221 is an apocalyptic number.

It is an amenable number.

1401310221 is a deficient number, since it is larger than the sum of its proper divisors (579247347).

1401310221 is a wasteful number, since it uses less digits than its factorization.

1401310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31092.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1401310221 is about 37434.0783377927. The cubic root of 1401310221 is about 1119.0378165425.

Adding to 1401310221 its reverse (1220131041), we get a palindrome (2621441262).

The spelling of 1401310221 in words is "one billion, four hundred one million, three hundred ten thousand, two hundred twenty-one".