221203121131330 has 128 divisors (see below), whose sum is σ = 448990016606208. Its totient is φ = 77852850147072.

The previous prime is 221203121131253. The next prime is 221203121131339. The reversal of 221203121131330 is 33131121302122.

It is a junction number, because it is equal to n+sod(n) for n = 221203121131295 and 221203121131304.

It is not an unprimeable number, because it can be changed into a prime (221203121131339) 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, 4797997059 + ... + 4798043161.

It is an arithmetic number, because the mean of its divisors is an integer number (3507734504736).

Almost surely, 2^{221203121131330} is an apocalyptic number.

221203121131330 is an abundant number, since it is smaller than the sum of its proper divisors (227786895474878).

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

221203121131330 is a wasteful number, since it uses less digits than its factorization.

221203121131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51680.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 221203121131330 its reverse (33131121302122), we get a palindrome (254334242433452).

The spelling of 221203121131330 in words is "two hundred twenty-one trillion, two hundred three billion, one hundred twenty-one million, one hundred thirty-one thousand, three hundred thirty".