21112100102222 has 16 divisors (see below), whose sum is σ = 32091155767440. Its totient is φ = 10415377240512.

The previous prime is 21112100102123. The next prime is 21112100102237. The reversal of 21112100102222 is 22220100121112.

It is a self number, because there is not a number n which added to its sum of digits gives 21112100102222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82136447 + ... + 82393082.

It is an arithmetic number, because the mean of its divisors is an integer number (2005697235465).

Almost surely, 2^{21112100102222} is an apocalyptic number.

21112100102222 is a deficient number, since it is larger than the sum of its proper divisors (10979055665218).

21112100102222 is a wasteful number, since it uses less digits than its factorization.

21112100102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164530387.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21112100102222 its reverse (22220100121112), we get a palindrome (43332200223334).

The spelling of 21112100102222 in words is "twenty-one trillion, one hundred twelve billion, one hundred million, one hundred two thousand, two hundred twenty-two".