21102010222 has 8 divisors (see below), whose sum is σ = 31661242056. Its totient is φ = 10548262872.

The previous prime is 21102010207. The next prime is 21102010229. The reversal of 21102010222 is 22201020112.

It is a happy number.

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 (21102010229) 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, 1361488 + ... + 1376899.

It is an arithmetic number, because the mean of its divisors is an integer number (3957655257).

Almost surely, 2^21102010222 is an apocalyptic number.

21102010222 is a deficient number, since it is larger than the sum of its proper divisors (10559231834).

21102010222 is a wasteful number, since it uses less digits than its factorization.

21102010222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742242.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21102010222 its reverse (22201020112), we get a palindrome (43303030334).

The spelling of 21102010222 in words is "twenty-one billion, one hundred two million, ten thousand, two hundred twenty-two".