21101102222 has 16 divisors (see below), whose sum is σ = 31740336000. Its totient is φ = 10521024888.

The previous prime is 21101102207. The next prime is 21101102237. The reversal of 21101102222 is 22220110112.

It is an interprime number because it is at equal distance from previous prime (21101102207) and next prime (21101102237).

It is a junction number, because it is equal to n+sod(n) for n = 21101102197 and 21101102206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356533 + ... + 1371999.

It is an arithmetic number, because the mean of its divisors is an integer number (1983771000).

Almost surely, 2^21101102222 is an apocalyptic number.

21101102222 is a deficient number, since it is larger than the sum of its proper divisors (10639233778).

21101102222 is a wasteful number, since it uses less digits than its factorization.

21101102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17335.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21101102222 its reverse (22220110112), we get a palindrome (43321212334).

The spelling of 21101102222 in words is "twenty-one billion, one hundred one million, one hundred two thousand, two hundred twenty-two".