203221230102 has 128 divisors (see below), whose sum is σ = 523673786880. Its totient is φ = 57733447680.

The previous prime is 203221230071. The next prime is 203221230109. The reversal of 203221230102 is 201032122302.

203221230102 is a `hidden beast` number, since 203 + 221 + 230 + 10 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203221230109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2556033 + ... + 2634339.

It is an arithmetic number, because the mean of its divisors is an integer number (4091201460).

Almost surely, 2^203221230102 is an apocalyptic number.

203221230102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 203221230102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261836893440).

203221230102 is an abundant number, since it is smaller than the sum of its proper divisors (320452556778).

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

203221230102 is a wasteful number, since it uses less digits than its factorization.

203221230102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78603 (or 78597 counting only the distinct ones).

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

Adding to 203221230102 its reverse (201032122302), we get a palindrome (404253352404).

The spelling of 203221230102 in words is "two hundred three billion, two hundred twenty-one million, two hundred thirty thousand, one hundred two".