21342433001 has 4 divisors (see below), whose sum is σ = 21599570832. Its totient is φ = 21085295172.

The previous prime is 21342432989. The next prime is 21342433111. The reversal of 21342433001 is 10033424312.

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 21342433001 - 2³⁴ = 4162563817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342433901) 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, 128568791 + ... + 128568956.

It is an arithmetic number, because the mean of its divisors is an integer number (5399892708).

Almost surely, 2^21342433001 is an apocalyptic number.

It is an amenable number.

21342433001 is a deficient number, since it is larger than the sum of its proper divisors (257137831).

21342433001 is an equidigital number, since it uses as much as digits as its factorization.

21342433001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257137830.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21342433001 its reverse (10033424312), we get a palindrome (31375857313).

The spelling of 21342433001 in words is "twenty-one billion, three hundred forty-two million, four hundred thirty-three thousand, one".