11212321043 has 16 divisors (see below), whose sum is σ = 13986203136. Its totient is φ = 8732370240.

The previous prime is 11212321039. The next prime is 11212321063. The reversal of 11212321043 is 34012321211.

It is not a de Polignac number, because 11212321043 - 2² = 11212321039 is a prime.

It is a super-2 number, since 2×11212321043² (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 (11212321063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116930 + ... + 189992.

It is an arithmetic number, because the mean of its divisors is an integer number (874137696).

Almost surely, 2^11212321043 is an apocalyptic number.

11212321043 is a deficient number, since it is larger than the sum of its proper divisors (2773882093).

11212321043 is a wasteful number, since it uses less digits than its factorization.

11212321043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75074.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11212321043 its reverse (34012321211), we get a palindrome (45224642254).

The spelling of 11212321043 in words is "eleven billion, two hundred twelve million, three hundred twenty-one thousand, forty-three".