21421314001 has 16 divisors (see below), whose sum is σ = 22667004160. Its totient is φ = 20187740160.

The previous prime is 21421313983. The next prime is 21421314037. The reversal of 21421314001 is 10041312412.

It is not a de Polignac number, because 21421314001 - 2¹³ = 21421305809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 21421314001.

It is not an unprimeable number, because it can be changed into a prime (21421314041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2931985 + ... + 2939281.

It is an arithmetic number, because the mean of its divisors is an integer number (1416687760).

Almost surely, 2^21421314001 is an apocalyptic number.

It is an amenable number.

21421314001 is a deficient number, since it is larger than the sum of its proper divisors (1245690159).

21421314001 is a wasteful number, since it uses less digits than its factorization.

21421314001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104.

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

Adding to 21421314001 its reverse (10041312412), we get a palindrome (31462626413).

The spelling of 21421314001 in words is "twenty-one billion, four hundred twenty-one million, three hundred fourteen thousand, one".