21110110022 has 8 divisors (see below), whose sum is σ = 31665793536. Its totient is φ = 10554845512.

The previous prime is 21110109989. The next prime is 21110110027. The reversal of 21110110022 is 22001101112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21110109985 and 21110110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110110027) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 106043 + ... + 231225.

It is an arithmetic number, because the mean of its divisors is an integer number (3958224192).

Almost surely, 2^21110110022 is an apocalyptic number.

21110110022 is a deficient number, since it is larger than the sum of its proper divisors (10555683514).

21110110022 is a wasteful number, since it uses less digits than its factorization.

21110110022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209502.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21110110022 its reverse (22001101112), we get a palindrome (43111211134).

The spelling of 21110110022 in words is "twenty-one billion, one hundred ten million, one hundred ten thousand, twenty-two".