11213505111 has 8 divisors (see below), whose sum is σ = 14954882544. Its totient is φ = 7473898880.

The previous prime is 11213505109. The next prime is 11213505143. The reversal of 11213505111 is 11150531211.

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 11213505111 - 2¹ = 11213505109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213505311) 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, 427956 + ... + 453401.

It is an arithmetic number, because the mean of its divisors is an integer number (1869360318).

Almost surely, 2^11213505111 is an apocalyptic number.

11213505111 is a deficient number, since it is larger than the sum of its proper divisors (3741377433).

11213505111 is an equidigital number, since it uses as much as digits as its factorization.

11213505111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885601.

The product of its (nonzero) digits is 150, while the sum is 21.

The spelling of 11213505111 in words is "eleven billion, two hundred thirteen million, five hundred five thousand, one hundred eleven".