1213201223331 has 16 divisors (see below), whose sum is σ = 1713058056864. Its totient is φ = 761089457664.

The previous prime is 1213201223309. The next prime is 1213201223363. The reversal of 1213201223331 is 1333221023121.

It is not a de Polignac number, because 1213201223331 - 2⁷ = 1213201223203 is a prime.

It is a super-2 number, since 2×1213201223331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213201223431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1815736 + ... + 2392341.

It is an arithmetic number, because the mean of its divisors is an integer number (107066128554).

Almost surely, 2^{1213201223331} is an apocalyptic number.

1213201223331 is a deficient number, since it is larger than the sum of its proper divisors (499856833533).

1213201223331 is a wasteful number, since it uses less digits than its factorization.

1213201223331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213750.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1213201223331 its reverse (1333221023121), we get a palindrome (2546422246452).

The spelling of 1213201223331 in words is "one trillion, two hundred thirteen billion, two hundred one million, two hundred twenty-three thousand, three hundred thirty-one".