11222212011 has 4 divisors (see below), whose sum is σ = 14962949352. Its totient is φ = 7481474672.

The previous prime is 11222212007. The next prime is 11222212021. The reversal of 11222212011 is 11021222211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11222212011 - 2² = 11222212007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11222212021) 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, 1870368666 + ... + 1870368671.

It is an arithmetic number, because the mean of its divisors is an integer number (3740737338).

Almost surely, 2^11222212011 is an apocalyptic number.

11222212011 is a deficient number, since it is larger than the sum of its proper divisors (3740737341).

11222212011 is an equidigital number, since it uses as much as digits as its factorization.

11222212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740737340.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11222212011 its reverse (11021222211), we get a palindrome (22243434222).

The spelling of 11222212011 in words is "eleven billion, two hundred twenty-two million, two hundred twelve thousand, eleven".