21112303357 has 16 divisors (see below), whose sum is σ = 21835939840. Its totient is φ = 20399671152.

The previous prime is 21112303327. The next prime is 21112303361. The reversal of 21112303357 is 75330321112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21112303357 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 (21112303327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5662828 + ... + 5666554.

It is an arithmetic number, because the mean of its divisors is an integer number (1364746240).

Almost surely, 2^21112303357 is an apocalyptic number.

It is an amenable number.

21112303357 is a deficient number, since it is larger than the sum of its proper divisors (723636483).

21112303357 is a wasteful number, since it uses less digits than its factorization.

21112303357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152.

The product of its (nonzero) digits is 3780, while the sum is 28.

Adding to 21112303357 its reverse (75330321112), we get a palindrome (96442624469).

The spelling of 21112303357 in words is "twenty-one billion, one hundred twelve million, three hundred three thousand, three hundred fifty-seven".