21421114001 has 16 divisors (see below), whose sum is σ = 25354321920. Its totient is φ = 17717174160.

The previous prime is 21421113869. The next prime is 21421114031. The reversal of 21421114001 is 10041112412.

It is not a de Polignac number, because 21421114001 - 2¹⁸ = 21420851857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21421114031) 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, 435161 + ... + 481878.

It is an arithmetic number, because the mean of its divisors is an integer number (1584645120).

Almost surely, 2^21421114001 is an apocalyptic number.

It is an amenable number.

21421114001 is a deficient number, since it is larger than the sum of its proper divisors (3933207919).

21421114001 is an equidigital number, since it uses as much as digits as its factorization.

21421114001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917164.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21421114001 its reverse (10041112412), we get a palindrome (31462226413).

The spelling of 21421114001 in words is "twenty-one billion, four hundred twenty-one million, one hundred fourteen thousand, one".