21442333201 has 4 divisors (see below), whose sum is σ = 21462505792. Its totient is φ = 21422160612.

The previous prime is 21442333153. The next prime is 21442333249. The reversal of 21442333201 is 10233324412.

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 an interprime number because it is at equal distance from previous prime (21442333153) and next prime (21442333249).

It is a cyclic number.

It is not a de Polignac number, because 21442333201 - 2⁹ = 21442332689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21442333501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10084701 + ... + 10086826.

It is an arithmetic number, because the mean of its divisors is an integer number (5365626448).

Almost surely, 2^21442333201 is an apocalyptic number.

It is an amenable number.

21442333201 is a deficient number, since it is larger than the sum of its proper divisors (20172591).

21442333201 is a wasteful number, since it uses less digits than its factorization.

21442333201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20172590.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21442333201 its reverse (10233324412), we get a palindrome (31675657613).

The spelling of 21442333201 in words is "twenty-one billion, four hundred forty-two million, three hundred thirty-three thousand, two hundred one".