21001111110022 has 8 divisors (see below), whose sum is σ = 31503717734400. Its totient is φ = 10499871865224.

The previous prime is 21001111109987. The next prime is 21001111110059. The reversal of 21001111110022 is 22001111110012.

It is a happy number.

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 = 21001111109984 and 21001111110011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341806497 + ... + 341867932.

It is an arithmetic number, because the mean of its divisors is an integer number (3937964716800).

Almost surely, 2^{21001111110022} is an apocalyptic number.

21001111110022 is a deficient number, since it is larger than the sum of its proper divisors (10502606624378).

21001111110022 is a wasteful number, since it uses less digits than its factorization.

21001111110022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683689790.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21001111110022 its reverse (22001111110012), we get a palindrome (43002222220034).

The spelling of 21001111110022 in words is "twenty-one trillion, one billion, one hundred eleven million, one hundred ten thousand, twenty-two".