1230201021331 has 4 divisors (see below), whose sum is σ = 1230884088664. Its totient is φ = 1229517954000.

The previous prime is 1230201021323. The next prime is 1230201021421. The reversal of 1230201021331 is 1331201020321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1230201021331 - 2³ = 1230201021323 is a prime.

It is a super-2 number, since 2×1230201021331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230201021299 and 1230201021308.

It is not an unprimeable number, because it can be changed into a prime (1230201021631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341530965 + ... + 341534566.

It is an arithmetic number, because the mean of its divisors is an integer number (307721022166).

Almost surely, 2^{1230201021331} is an apocalyptic number.

1230201021331 is a deficient number, since it is larger than the sum of its proper divisors (683067333).

1230201021331 is an equidigital number, since it uses as much as digits as its factorization.

1230201021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683067332.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1230201021331 its reverse (1331201020321), we get a palindrome (2561402041652).

The spelling of 1230201021331 in words is "one trillion, two hundred thirty billion, two hundred one million, twenty-one thousand, three hundred thirty-one".