21302123350 has 24 divisors (see below), whose sum is σ = 39659113440. Its totient is φ = 8512857120.

The previous prime is 21302123347. The next prime is 21302123489. The reversal of 21302123350 is 5332120312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145822 + ... + 252721.

It is an arithmetic number, because the mean of its divisors is an integer number (1652463060).

Almost surely, 2^21302123350 is an apocalyptic number.

21302123350 is a deficient number, since it is larger than the sum of its proper divisors (18356990090).

21302123350 is a wasteful number, since it uses less digits than its factorization.

21302123350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399624 (or 399619 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 21302123350 its reverse (5332120312), we get a palindrome (26634243662).

The spelling of 21302123350 in words is "twenty-one billion, three hundred two million, one hundred twenty-three thousand, three hundred fifty".