21322131112 has 16 divisors (see below), whose sum is σ = 40015791360. Its totient is φ = 10651253424.

The previous prime is 21322131107. The next prime is 21322131143. The reversal of 21322131112 is 21113122312.

It is a self number, because there is not a number n which added to its sum of digits gives 21322131112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217278 + ... + 1234669.

It is an arithmetic number, because the mean of its divisors is an integer number (2500986960).

Almost surely, 2^21322131112 is an apocalyptic number.

It is an amenable number.

21322131112 is a deficient number, since it is larger than the sum of its proper divisors (18693660248).

21322131112 is a wasteful number, since it uses less digits than its factorization.

21322131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453040 (or 2453036 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 21322131112 its reverse (21113122312), we get a palindrome (42435253424).

The spelling of 21322131112 in words is "twenty-one billion, three hundred twenty-two million, one hundred thirty-one thousand, one hundred twelve".