11331212201 has 4 divisors (see below), whose sum is σ = 11342931072. Its totient is φ = 11319493332.

The previous prime is 11331212143. The next prime is 11331212213. The reversal of 11331212201 is 10221213311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11331212201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11331212201.

It is not an unprimeable number, because it can be changed into a prime (11331212251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5857985 + ... + 5859918.

It is an arithmetic number, because the mean of its divisors is an integer number (2835732768).

Almost surely, 2^11331212201 is an apocalyptic number.

It is an amenable number.

11331212201 is a deficient number, since it is larger than the sum of its proper divisors (11718871).

11331212201 is an equidigital number, since it uses as much as digits as its factorization.

11331212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11718870.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11331212201 its reverse (10221213311), we get a palindrome (21552425512).

The spelling of 11331212201 in words is "eleven billion, three hundred thirty-one million, two hundred twelve thousand, two hundred one".