11122212011 has 8 divisors (see below), whose sum is σ = 11243768448. Its totient is φ = 11000880000.

The previous prime is 11122211993. The next prime is 11122212043. The reversal of 11122212011 is 11021222111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122212011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122212061) 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, 44531 + ... + 155651.

It is an arithmetic number, because the mean of its divisors is an integer number (1405471056).

Almost surely, 2^11122212011 is an apocalyptic number.

11122212011 is a deficient number, since it is larger than the sum of its proper divisors (121556437).

11122212011 is a wasteful number, since it uses less digits than its factorization.

11122212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112213.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11122212011 its reverse (11021222111), we get a palindrome (22143434122).

The spelling of 11122212011 in words is "eleven billion, one hundred twenty-two million, two hundred twelve thousand, eleven".