11211120111 has 8 divisors (see below), whose sum is σ = 14955542784. Its totient is φ = 7470388760.

The previous prime is 11211120077. The next prime is 11211120131. The reversal of 11211120111 is 11102111211.

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

It is a cyclic number.

It is not a de Polignac number, because 11211120111 - 2⁶ = 11211120047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211120131) 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, 915735 + ... + 927896.

It is an arithmetic number, because the mean of its divisors is an integer number (1869442848).

Almost surely, 2^11211120111 is an apocalyptic number.

11211120111 is a deficient number, since it is larger than the sum of its proper divisors (3744422673).

11211120111 is a wasteful number, since it uses less digits than its factorization.

11211120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845661.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11211120111 its reverse (11102111211), we get a palindrome (22313231322).

The spelling of 11211120111 in words is "eleven billion, two hundred eleven million, one hundred twenty thousand, one hundred eleven".