21142230332303 has 4 divisors (see below), whose sum is σ = 21167919555888. Its totient is φ = 21116541108720.

The previous prime is 21142230332297. The next prime is 21142230332339. The reversal of 21142230332303 is 30323303224112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21142230332303 - 2²² = 21142226137999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142230332393) 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, 12844610558 + ... + 12844612203.

It is an arithmetic number, because the mean of its divisors is an integer number (5291979888972).

Almost surely, 2^{21142230332303} is an apocalyptic number.

21142230332303 is a deficient number, since it is larger than the sum of its proper divisors (25689223585).

21142230332303 is an equidigital number, since it uses as much as digits as its factorization.

21142230332303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25689223584.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21142230332303 its reverse (30323303224112), we get a palindrome (51465533556415).

The spelling of 21142230332303 in words is "twenty-one trillion, one hundred forty-two billion, two hundred thirty million, three hundred thirty-two thousand, three hundred three".