21442053003 has 8 divisors (see below), whose sum is σ = 32673604608. Its totient is φ = 12252601704.

The previous prime is 21442052987. The next prime is 21442053007. The reversal of 21442053003 is 30035024412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21442053003 - 2⁴ = 21442052987 is a prime.

It is a super-2 number, since 2×21442053003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21442053007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510525051 + ... + 510525092.

It is an arithmetic number, because the mean of its divisors is an integer number (4084200576).

Almost surely, 2^21442053003 is an apocalyptic number.

21442053003 is a deficient number, since it is larger than the sum of its proper divisors (11231551605).

21442053003 is a wasteful number, since it uses less digits than its factorization.

21442053003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021050153.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 21442053003 its reverse (30035024412), we get a palindrome (51477077415).

The spelling of 21442053003 in words is "twenty-one billion, four hundred forty-two million, fifty-three thousand, three".