210101120112 has 80 divisors (see below), whose sum is σ = 585408343968. Its totient is φ = 64547374080.

The previous prime is 210101120111. The next prime is 210101120137. The reversal of 210101120112 is 211021101012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101120111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149662 + ... + 665282.

Almost surely, 2^210101120112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210101120112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292704171984).

210101120112 is an abundant number, since it is smaller than the sum of its proper divisors (375307223856).

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

210101120112 is a wasteful number, since it uses less digits than its factorization.

210101120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516298 (or 516292 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210101120112 its reverse (211021101012), we get a palindrome (421122221124).

The spelling of 210101120112 in words is "two hundred ten billion, one hundred one million, one hundred twenty thousand, one hundred twelve".