1401332021 has 8 divisors (see below), whose sum is σ = 1413465504. Its totient is φ = 1389220560.

The previous prime is 1401332011. The next prime is 1401332033. The reversal of 1401332021 is 1202331041.

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

It is a cyclic number.

It is not a de Polignac number, because 1401332021 - 2⁶ = 1401331957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401332011) 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, 138290 + ... + 148076.

It is an arithmetic number, because the mean of its divisors is an integer number (176683188).

Almost surely, 2^1401332021 is an apocalyptic number.

It is an amenable number.

1401332021 is a deficient number, since it is larger than the sum of its proper divisors (12133483).

1401332021 is a wasteful number, since it uses less digits than its factorization.

1401332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1401332021 is about 37434.3695151929. The cubic root of 1401332021 is about 1119.0436194208.

Adding to 1401332021 its reverse (1202331041), we get a palindrome (2603663062).

The spelling of 1401332021 in words is "one billion, four hundred one million, three hundred thirty-two thousand, twenty-one".