21110112122 has 16 divisors (see below), whose sum is σ = 34559046144. Its totient is φ = 9591276000.

The previous prime is 21110112113. The next prime is 21110112137. The reversal of 21110112122 is 22121101112.

It is a super-2 number, since 2×21110112122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21110112097 and 21110112106.

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, 160154 + ... + 260517.

It is an arithmetic number, because the mean of its divisors is an integer number (2159940384).

Almost surely, 2^21110112122 is an apocalyptic number.

21110112122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21110112122 is a deficient number, since it is larger than the sum of its proper divisors (13448934022).

21110112122 is a wasteful number, since it uses less digits than its factorization.

21110112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422965.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110112122 its reverse (22121101112), we get a palindrome (43231213234).

The spelling of 21110112122 in words is "twenty-one billion, one hundred ten million, one hundred twelve thousand, one hundred twenty-two".