203210021112 has 96 divisors (see below), whose sum is σ = 591927840720. Its totient is φ = 57965698560.

The previous prime is 203210021099. The next prime is 203210021117. The reversal of 203210021112 is 211120012302.

It is a junction number, because it is equal to n+sod(n) for n = 203210021091 and 203210021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203210021117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 585562 + ... + 865622.

Almost surely, 2^203210021112 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 203210021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295963920360).

203210021112 is an abundant number, since it is smaller than the sum of its proper divisors (388717819608).

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

203210021112 is a wasteful number, since it uses less digits than its factorization.

203210021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280701 (or 280690 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 203210021112 its reverse (211120012302), we get a palindrome (414330033414).

The spelling of 203210021112 in words is "two hundred three billion, two hundred ten million, twenty-one thousand, one hundred twelve".