21100102222 has 8 divisors (see below), whose sum is σ = 31738316400. Its totient is φ = 10520663424.

The previous prime is 21100102213. The next prime is 21100102241. The reversal of 21100102222 is 22220100112.

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14692947 + ... + 14694382.

It is an arithmetic number, because the mean of its divisors is an integer number (3967289550).

Almost surely, 2^21100102222 is an apocalyptic number.

21100102222 is a deficient number, since it is larger than the sum of its proper divisors (10638214178).

21100102222 is a wasteful number, since it uses less digits than its factorization.

21100102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29387690.

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

Adding to 21100102222 its reverse (22220100112), we get a palindrome (43320202334).

The spelling of 21100102222 in words is "twenty-one billion, one hundred million, one hundred two thousand, two hundred twenty-two".