1401013221 has 8 divisors (see below), whose sum is σ = 1868285664. Its totient is φ = 933874800.

The previous prime is 1401013219. The next prime is 1401013259. The reversal of 1401013221 is 1223101041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1401013221 - 2¹ = 1401013219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401013261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5851 + ... + 53256.

It is an arithmetic number, because the mean of its divisors is an integer number (233535708).

Almost surely, 2^1401013221 is an apocalyptic number.

It is an amenable number.

1401013221 is a deficient number, since it is larger than the sum of its proper divisors (467272443).

1401013221 is an equidigital number, since it uses as much as digits as its factorization.

1401013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67011.

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

The square root of 1401013221 is about 37430.1111539894. Note that the first 4 decimals coincide. The cubic root of 1401013221 is about 1118.9587529848.

Adding to 1401013221 its reverse (1223101041), we get a palindrome (2624114262).

The spelling of 1401013221 in words is "one billion, four hundred one million, thirteen thousand, two hundred twenty-one".