213103121332 has 24 divisors (see below), whose sum is σ = 375696638856. Its totient is φ = 105761407488.

The previous prime is 213103121249. The next prime is 213103121333. The reversal of 213103121332 is 233121301312.

It can be written as a sum of positive squares in 4 ways, for example, as 5024824996 + 208078296336 = 70886^2 + 456156^2 .

It is a super-2 number, since 2×213103121332² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213103121333) 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 7 ways as a sum of consecutive naturals, for example, 6204318 + ... + 6238570.

It is an arithmetic number, because the mean of its divisors is an integer number (15654026619).

Almost surely, 2^213103121332 is an apocalyptic number.

It is an amenable number.

213103121332 is a deficient number, since it is larger than the sum of its proper divisors (162593517524).

213103121332 is a wasteful number, since it uses less digits than its factorization.

213103121332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45747 (or 45745 counting only the distinct ones).

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

Adding to 213103121332 its reverse (233121301312), we get a palindrome (446224422644).

The spelling of 213103121332 in words is "two hundred thirteen billion, one hundred three million, one hundred twenty-one thousand, three hundred thirty-two".