21010112211122 has 16 divisors (see below), whose sum is σ = 32887284135552. Its totient is φ = 10047736696800.

The previous prime is 21010112211119. The next prime is 21010112211131. The reversal of 21010112211122 is 22111221101012.

It is a self number, because there is not a number n which added to its sum of digits gives 21010112211122.

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, 12323558 + ... + 13924449.

It is an arithmetic number, because the mean of its divisors is an integer number (2055455258472).

Almost surely, 2^{21010112211122} is an apocalyptic number.

21010112211122 is a deficient number, since it is larger than the sum of its proper divisors (11877171924430).

21010112211122 is a wasteful number, since it uses less digits than its factorization.

21010112211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26265433.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21010112211122 its reverse (22111221101012), we get a palindrome (43121333312134).

The spelling of 21010112211122 in words is "twenty-one trillion, ten billion, one hundred twelve million, two hundred eleven thousand, one hundred twenty-two".