213303231121 has 16 divisors (see below), whose sum is σ = 229906713600. Its totient is φ = 197319101760.

The previous prime is 213303231107. The next prime is 213303231133. The reversal of 213303231121 is 121132303312.

It is a cyclic number.

It is not a de Polignac number, because 213303231121 - 2¹³ = 213303222929 is a prime.

It is a super-4 number, since 4×213303231121⁴ (a number of 46 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213303231092 and 213303231101.

It is not an unprimeable number, because it can be changed into a prime (213303231721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1007871 + ... + 1201003.

It is an arithmetic number, because the mean of its divisors is an integer number (14369169600).

Almost surely, 2^213303231121 is an apocalyptic number.

It is an amenable number.

213303231121 is a deficient number, since it is larger than the sum of its proper divisors (16603482479).

213303231121 is a wasteful number, since it uses less digits than its factorization.

213303231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194736.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 213303231121 its reverse (121132303312), we get a palindrome (334435534433).

The spelling of 213303231121 in words is "two hundred thirteen billion, three hundred three million, two hundred thirty-one thousand, one hundred twenty-one".