203212221030 has 384 divisors, whose sum is σ = 671542050816. Its totient is φ = 41486515200.

The previous prime is 203212221029. The next prime is 203212221031. The reversal of 203212221030 is 30122212302.

203212221030 is a `hidden beast` number, since 20 + 321 + 222 + 103 + 0 = 666.

203212221030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (203212221029) and next prime (203212221031).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 203212220994 and 203212221012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203212221031) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 57876975 + ... + 57880485.

It is an arithmetic number, because the mean of its divisors is an integer number (1748807424).

Almost surely, 2^203212221030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203212221030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335771025408).

203212221030 is an abundant number, since it is smaller than the sum of its proper divisors (468329829786).

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

203212221030 is a wasteful number, since it uses less digits than its factorization.

203212221030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 203212221030 its reverse (30122212302), we get a palindrome (233334433332).

The spelling of 203212221030 in words is "two hundred three billion, two hundred twelve million, two hundred twenty-one thousand, thirty".