21101010112 has 84 divisors (see below), whose sum is σ = 51818505456. Its totient is φ = 8347622400.

The previous prime is 21101010061. The next prime is 21101010137.

21101010112 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63639 + ... + 215062.

Almost surely, 2^21101010112 is an apocalyptic number.

It is an amenable number.

21101010112 is an abundant number, since it is smaller than the sum of its proper divisors (30717495344).

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

21101010112 is a wasteful number, since it uses less digits than its factorization.

21101010112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278746 (or 278723 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

It can be divided in two parts, 211010 and 10112, that added together give a palindrome (221122).

The spelling of 21101010112 in words is "twenty-one billion, one hundred one million, ten thousand, one hundred twelve".