21412001051 has 4 divisors (see below), whose sum is σ = 24470858352. Its totient is φ = 18353143752.

The previous prime is 21412001029. The next prime is 21412001053. The reversal of 21412001051 is 15010021412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21412001051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21412001053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529428640 + ... + 1529428653.

It is an arithmetic number, because the mean of its divisors is an integer number (6117714588).

Almost surely, 2^21412001051 is an apocalyptic number.

21412001051 is a deficient number, since it is larger than the sum of its proper divisors (3058857301).

21412001051 is an equidigital number, since it uses as much as digits as its factorization.

21412001051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058857300.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 21412001051 its reverse (15010021412), we get a palindrome (36422022463).

The spelling of 21412001051 in words is "twenty-one billion, four hundred twelve million, one thousand, fifty-one".