21442101203201 has 4 divisors (see below), whose sum is σ = 24505258517952. Its totient is φ = 18378943888452.

The previous prime is 21442101203183. The next prime is 21442101203203. The reversal of 21442101203201 is 10230210124412.

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 not a de Polignac number, because 21442101203201 - 2²² = 21442097008897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21442101203203) 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, 1531578657365 + ... + 1531578657378.

It is an arithmetic number, because the mean of its divisors is an integer number (6126314629488).

Almost surely, 2^{21442101203201} is an apocalyptic number.

It is an amenable number.

21442101203201 is a deficient number, since it is larger than the sum of its proper divisors (3063157314751).

21442101203201 is an equidigital number, since it uses as much as digits as its factorization.

21442101203201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063157314750.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21442101203201 its reverse (10230210124412), we get a palindrome (31672311327613).

The spelling of 21442101203201 in words is "twenty-one trillion, four hundred forty-two billion, one hundred one million, two hundred three thousand, two hundred one".