21112303510 has 16 divisors (see below), whose sum is σ = 38087937936. Its totient is φ = 8425856608.

The previous prime is 21112303483. The next prime is 21112303517. The reversal of 21112303510 is 1530321112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112303517) 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, 2378449 + ... + 2387308.

It is an arithmetic number, because the mean of its divisors is an integer number (2380496121).

Almost surely, 2^21112303510 is an apocalyptic number.

21112303510 is a deficient number, since it is larger than the sum of its proper divisors (16975634426).

21112303510 is a wasteful number, since it uses less digits than its factorization.

21112303510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766207.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 21112303510 its reverse (1530321112), we get a palindrome (22642624622).

The spelling of 21112303510 in words is "twenty-one billion, one hundred twelve million, three hundred three thousand, five hundred ten".