21112010122 has 32 divisors (see below), whose sum is σ = 36313293312. Its totient is φ = 9017737344.

The previous prime is 21112010077. The next prime is 21112010123. The reversal of 21112010122 is 22101021112.

It is not an unprimeable number, because it can be changed into a prime (21112010123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8016918 + ... + 8019550.

It is an arithmetic number, because the mean of its divisors is an integer number (1134790416).

Almost surely, 2^21112010122 is an apocalyptic number.

21112010122 is a deficient number, since it is larger than the sum of its proper divisors (15201283190).

21112010122 is a wasteful number, since it uses less digits than its factorization.

21112010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21112010122 its reverse (22101021112), we get a palindrome (43213031234).

The spelling of 21112010122 in words is "twenty-one billion, one hundred twelve million, ten thousand, one hundred twenty-two".