21222034112 has 14 divisors (see below), whose sum is σ = 42112474068. Its totient is φ = 10611017024.

The previous prime is 21222034109. The next prime is 21222034117. The reversal of 21222034112 is 21143022212.

It is not an unprimeable number, because it can be changed into a prime (21222034117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165797078 + ... + 165797205.

It is an arithmetic number, because the mean of its divisors is an integer number (3008033862).

Almost surely, 2^21222034112 is an apocalyptic number.

It is an amenable number.

21222034112 is a deficient number, since it is larger than the sum of its proper divisors (20890439956).

21222034112 is an equidigital number, since it uses as much as digits as its factorization.

21222034112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331594295 (or 331594285 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21222034112 its reverse (21143022212), we get a palindrome (42365056324).

The spelling of 21222034112 in words is "twenty-one billion, two hundred twenty-two million, thirty-four thousand, one hundred twelve".