21112233284 has 12 divisors (see below), whose sum is σ = 36970363584. Its totient is φ = 10549272264.

The previous prime is 21112233283. The next prime is 21112233319. The reversal of 21112233284 is 48233221112.

It is not an unprimeable number, because it can be changed into a prime (21112233283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704152 + ... + 1716495.

It is an arithmetic number, because the mean of its divisors is an integer number (3080863632).

Almost surely, 2^21112233284 is an apocalyptic number.

It is an amenable number.

21112233284 is a deficient number, since it is larger than the sum of its proper divisors (15858130300).

21112233284 is a wasteful number, since it uses less digits than its factorization.

21112233284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422194 (or 3422192 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

Adding to 21112233284 its reverse (48233221112), we get a palindrome (69345454396).

The spelling of 21112233284 in words is "twenty-one billion, one hundred twelve million, two hundred thirty-three thousand, two hundred eighty-four".