1221333203130 has 32 divisors (see below), whose sum is σ = 3010421303424. Its totient is φ = 316886452416.

The previous prime is 1221333203113. The next prime is 1221333203203. The reversal of 1221333203130 is 313023331221.

It is a self number, because there is not a number n which added to its sum of digits gives 1221333203130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550148982 + ... + 550151201.

It is an arithmetic number, because the mean of its divisors is an integer number (94075665732).

Almost surely, 2^{1221333203130} is an apocalyptic number.

1221333203130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221333203130 is an abundant number, since it is smaller than the sum of its proper divisors (1789088100294).

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

1221333203130 is a wasteful number, since it uses less digits than its factorization.

1221333203130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100300230.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1221333203130 its reverse (313023331221), we get a palindrome (1534356534351).

The spelling of 1221333203130 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-three million, two hundred three thousand, one hundred thirty".