21103212302 has 16 divisors (see below), whose sum is σ = 32136998400. Its totient is φ = 10392092928.

The previous prime is 21103212289. The next prime is 21103212331. The reversal of 21103212302 is 20321230112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268427 + ... + 338022.

It is an arithmetic number, because the mean of its divisors is an integer number (2008562400).

Almost surely, 2^21103212302 is an apocalyptic number.

21103212302 is a deficient number, since it is larger than the sum of its proper divisors (11033786098).

21103212302 is a wasteful number, since it uses less digits than its factorization.

21103212302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606715.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21103212302 its reverse (20321230112), we get a palindrome (41424442414).

The spelling of 21103212302 in words is "twenty-one billion, one hundred three million, two hundred twelve thousand, three hundred two".