21003332023 has 8 divisors (see below), whose sum is σ = 22242729600. Its totient is φ = 19764368640.

The previous prime is 21003332017. The next prime is 21003332029. The reversal of 21003332023 is 32023330012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21003332017) and next prime (21003332029).

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

It is a de Polignac number, because none of the positive numbers 2^k-21003332023 is a prime.

It is a super-2 number, since 2×21003332023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003332029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6183 + ... + 205048.

It is an arithmetic number, because the mean of its divisors is an integer number (2780341200).

Almost surely, 2^21003332023 is an apocalyptic number.

21003332023 is a deficient number, since it is larger than the sum of its proper divisors (1239397577).

21003332023 is a wasteful number, since it uses less digits than its factorization.

21003332023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217097.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21003332023 its reverse (32023330012), we get a palindrome (53026662035).

The spelling of 21003332023 in words is "twenty-one billion, three million, three hundred thirty-two thousand, twenty-three".