21111144302 has 32 divisors (see below), whose sum is σ = 33855905280. Its totient is φ = 9843482880.

The previous prime is 21111144277. The next prime is 21111144337. The reversal of 21111144302 is 20344111112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5133227 + ... + 5137337.

It is an arithmetic number, because the mean of its divisors is an integer number (1057997040).

Almost surely, 2^21111144302 is an apocalyptic number.

21111144302 is a deficient number, since it is larger than the sum of its proper divisors (12744760978).

21111144302 is a wasteful number, since it uses less digits than its factorization.

21111144302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6216.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21111144302 its reverse (20344111112), we get a palindrome (41455255414).

The spelling of 21111144302 in words is "twenty-one billion, one hundred eleven million, one hundred forty-four thousand, three hundred two".