21112210100122 has 32 divisors (see below), whose sum is σ = 33618330244800. Its totient is φ = 9915728254848.

The previous prime is 21112210100083. The next prime is 21112210100153. The reversal of 21112210100122 is 22100101221112.

It is a junction number, because it is equal to n+sod(n) for n = 21112210100096 and 21112210100105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1497598 + ... + 6668374.

It is an arithmetic number, because the mean of its divisors is an integer number (1050572820150).

Almost surely, 2^{21112210100122} is an apocalyptic number.

21112210100122 is a deficient number, since it is larger than the sum of its proper divisors (12506120144678).

21112210100122 is a wasteful number, since it uses less digits than its factorization.

21112210100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5171710.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21112210100122 its reverse (22100101221112), we get a palindrome (43212311321234).

The spelling of 21112210100122 in words is "twenty-one trillion, one hundred twelve billion, two hundred ten million, one hundred thousand, one hundred twenty-two".