21110011122 has 32 divisors (see below), whose sum is σ = 43736889600. Its totient is φ = 6784537088.

The previous prime is 21110011073. The next prime is 21110011127. The reversal of 21110011122 is 22111001112.

It is a junction number, because it is equal to n+sod(n) for n = 21110011098 and 21110011107.

It is not an unprimeable number, because it can be changed into a prime (21110011127) 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, 40738 + ... + 209474.

It is an arithmetic number, because the mean of its divisors is an integer number (1366777800).

Almost surely, 2^21110011122 is an apocalyptic number.

21110011122 is an abundant number, since it is smaller than the sum of its proper divisors (22626878478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110011122 is a wasteful number, since it uses less digits than its factorization.

21110011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169490.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21110011122 its reverse (22111001112), we get a palindrome (43221012234).

It can be divided in two parts, 2111001112 and 2, that multiplied together give a palindrome (4222002224).

The spelling of 21110011122 in words is "twenty-one billion, one hundred ten million, eleven thousand, one hundred twenty-two".