21101101222 has 8 divisors (see below), whose sum is σ = 31977957816. Its totient is φ = 10441781952.

The previous prime is 21101101201. The next prime is 21101101223. The reversal of 21101101222 is 22210110112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101101223) 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, 54384088 + ... + 54384475.

It is an arithmetic number, because the mean of its divisors is an integer number (3997244727).

Almost surely, 2^21101101222 is an apocalyptic number.

21101101222 is a deficient number, since it is larger than the sum of its proper divisors (10876856594).

21101101222 is a wasteful number, since it uses less digits than its factorization.

21101101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108768662.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21101101222 its reverse (22210110112), we get a palindrome (43311211334).

The spelling of 21101101222 in words is "twenty-one billion, one hundred one million, one hundred one thousand, two hundred twenty-two".