401231421001 has 4 divisors (see below), whose sum is σ = 401261236992. Its totient is φ = 401201605012.

The previous prime is 401231420977. The next prime is 401231421043. The reversal of 401231421001 is 100124132104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401231421001 - 2¹⁹ = 401230896713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401231421001.

It is not an unprimeable number, because it can be changed into a prime (401231421301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14887801 + ... + 14914726.

It is an arithmetic number, because the mean of its divisors is an integer number (100315309248).

Almost surely, 2^401231421001 is an apocalyptic number.

It is an amenable number.

401231421001 is a deficient number, since it is larger than the sum of its proper divisors (29815991).

401231421001 is a wasteful number, since it uses less digits than its factorization.

401231421001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29815990.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 401231421001 its reverse (100124132104), we get a palindrome (501355553105).

The spelling of 401231421001 in words is "four hundred one billion, two hundred thirty-one million, four hundred twenty-one thousand, one".