201021331230 has 320 divisors, whose sum is σ = 581117442048. Its totient is φ = 49683041280.

The previous prime is 201021331223. The next prime is 201021331237. The reversal of 201021331230 is 32133120102.

201021331230 is a `hidden beast` number, since 2 + 0 + 102 + 1 + 331 + 230 = 666.

It is an interprime number because it is at equal distance from previous prime (201021331223) and next prime (201021331237).

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 (201021331237) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 384361749 + ... + 384362271.

Almost surely, 2^201021331230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201021331230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290558721024).

201021331230 is an abundant number, since it is smaller than the sum of its proper divisors (380096110818).

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

201021331230 is a wasteful number, since it uses less digits than its factorization.

201021331230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 201021331230 its reverse (32133120102), we get a palindrome (233154451332).

The spelling of 201021331230 in words is "two hundred one billion, twenty-one million, three hundred thirty-one thousand, two hundred thirty".