1213320233121 has 32 divisors (see below), whose sum is σ = 1674927894528. Its totient is φ = 780652857600.

The previous prime is 1213320233119. The next prime is 1213320233161.

1213320233121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1213320233121 - 2¹ = 1213320233119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213320233091 and 1213320233100.

It is not an unprimeable number, because it can be changed into a prime (1213320233161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122540271 + ... + 122550171.

It is an arithmetic number, because the mean of its divisors is an integer number (52341496704).

Almost surely, 2^{1213320233121} is an apocalyptic number.

It is an amenable number.

1213320233121 is a deficient number, since it is larger than the sum of its proper divisors (461607661407).

1213320233121 is a wasteful number, since it uses less digits than its factorization.

1213320233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18761.

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

It can be divided in two parts, 1213320 and 233121, that added together give a palindrome (1446441).

The spelling of 1213320233121 in words is "one trillion, two hundred thirteen billion, three hundred twenty million, two hundred thirty-three thousand, one hundred twenty-one".