11120221211 has 4 divisors (see below), whose sum is σ = 12131150424. Its totient is φ = 10109292000.

The previous prime is 11120221159. The next prime is 11120221223. The reversal of 11120221211 is 11212202111.

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 11120221211 - 2¹⁴ = 11120204827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11120221811) 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, 505464590 + ... + 505464611.

It is an arithmetic number, because the mean of its divisors is an integer number (3032787606).

Almost surely, 2^11120221211 is an apocalyptic number.

11120221211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11120221211 is a deficient number, since it is larger than the sum of its proper divisors (1010929213).

11120221211 is a wasteful number, since it uses less digits than its factorization.

11120221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010929212.

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

Adding to 11120221211 its reverse (11212202111), we get a palindrome (22332423322).

The spelling of 11120221211 in words is "eleven billion, one hundred twenty million, two hundred twenty-one thousand, two hundred eleven".