203212421104 has 80 divisors (see below), whose sum is σ = 491209989120. Its totient is φ = 79119924480.

The previous prime is 203212421101. The next prime is 203212421119. The reversal of 203212421104 is 401124212302.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203212421101) 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, 1784137 + ... + 1894615.

It is an arithmetic number, because the mean of its divisors is an integer number (6140124864).

Almost surely, 2^203212421104 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 203212421104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245604994560).

203212421104 is an abundant number, since it is smaller than the sum of its proper divisors (287997568016).

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

203212421104 is a wasteful number, since it uses less digits than its factorization.

203212421104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111998 (or 111992 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 203212421104 its reverse (401124212302), we get a palindrome (604336633406).

The spelling of 203212421104 in words is "two hundred three billion, two hundred twelve million, four hundred twenty-one thousand, one hundred four".