21110110201012 has 24 divisors (see below), whose sum is σ = 42221401709760. Its totient is φ = 9046936948800.

The previous prime is 21110110201003. The next prime is 21110110201073. The reversal of 21110110201012 is 21010201101112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21110110200983 and 21110110201001.

It is a congruent number.

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, 9527062 + ... + 11531917.

It is an arithmetic number, because the mean of its divisors is an integer number (1759225071240).

Almost surely, 2^{21110110201012} is an apocalyptic number.

It is an amenable number.

21110110201012 is an abundant number, since it is smaller than the sum of its proper divisors (21111291508748).

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

21110110201012 is a wasteful number, since it uses less digits than its factorization.

21110110201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21094791 (or 21094789 counting only the distinct ones).

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

Adding to 21110110201012 its reverse (21010201101112), we get a palindrome (42120311302124).

The spelling of 21110110201012 in words is "twenty-one trillion, one hundred ten billion, one hundred ten million, two hundred one thousand, twelve".