11212132321 has 8 divisors (see below), whose sum is σ = 12199085864. Its totient is φ = 10242961920.

The previous prime is 11212132301. The next prime is 11212132331. The reversal of 11212132321 is 12323121211.

It can be written as a sum of positive squares in 4 ways, for example, as 183982096 + 11028150225 = 13564^2 + 105015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11212132321 - 2³³ = 2622197729 is a prime.

It is a super-2 number, since 2×11212132321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212132301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4444470 + ... + 4446991.

It is an arithmetic number, because the mean of its divisors is an integer number (1524885733).

Almost surely, 2^11212132321 is an apocalyptic number.

It is an amenable number.

11212132321 is a deficient number, since it is larger than the sum of its proper divisors (986953543).

11212132321 is an equidigital number, since it uses as much as digits as its factorization.

11212132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8891571.

The product of its digits is 144, while the sum is 19.

Adding to 11212132321 its reverse (12323121211), we get a palindrome (23535253532).

The spelling of 11212132321 in words is "eleven billion, two hundred twelve million, one hundred thirty-two thousand, three hundred twenty-one".