21010200112 has 40 divisors (see below), whose sum is σ = 44607144960. Its totient is φ = 9507247680.

The previous prime is 21010200109. The next prime is 21010200137. The reversal of 21010200112 is 21100201012.

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, 228412 + ... + 306907.

It is an arithmetic number, because the mean of its divisors is an integer number (1115178624).

Almost surely, 2^21010200112 is an apocalyptic number.

21010200112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21010200112 is an abundant number, since it is smaller than the sum of its proper divisors (23596944848).

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

21010200112 is a wasteful number, since it uses less digits than its factorization.

21010200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535561 (or 535555 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21010200112 its reverse (21100201012), we get a palindrome (42110401124).

It can be divided in two parts, 21010 and 200112, that added together give a palindrome (221122).

The spelling of 21010200112 in words is "twenty-one billion, ten million, two hundred thousand, one hundred twelve".