21010112120110 has 64 divisors (see below), whose sum is σ = 39155267745792. Its totient is φ = 8111868201216.

The previous prime is 21010112120083. The next prime is 21010112120113. The reversal of 21010112120110 is 1102121101012.

It is a happy number.

21010112120110 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21010112120110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010112120113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 607509879 + ... + 607544461.

It is an arithmetic number, because the mean of its divisors is an integer number (611801058528).

Almost surely, 2^{21010112120110} is an apocalyptic number.

21010112120110 is a deficient number, since it is larger than the sum of its proper divisors (18145155625682).

21010112120110 is a wasteful number, since it uses less digits than its factorization.

21010112120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52417.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21010112120110 its reverse (1102121101012), we get a palindrome (22112233221122).

The spelling of 21010112120110 in words is "twenty-one trillion, ten billion, one hundred twelve million, one hundred twenty thousand, one hundred ten".