201100031322330 has 128 divisors (see below), whose sum is σ = 575659534749696. Its totient is φ = 43960431398400.

The previous prime is 201100031322269. The next prime is 201100031322331. The reversal of 201100031322330 is 33223130001102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 201100031322297 and 201100031322306.

It is not an unprimeable number, because it can be changed into a prime (201100031322331) 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, 28144350 + ... + 34558710.

It is an arithmetic number, because the mean of its divisors is an integer number (4497340115232).

Almost surely, 2^{201100031322330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201100031322330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287829767374848).

201100031322330 is an abundant number, since it is smaller than the sum of its proper divisors (374559503427366).

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

201100031322330 is a wasteful number, since it uses less digits than its factorization.

201100031322330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420892.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 201100031322330 its reverse (33223130001102), we get a palindrome (234323161323432).

The spelling of 201100031322330 in words is "two hundred one trillion, one hundred billion, thirty-one million, three hundred twenty-two thousand, three hundred thirty".