11112101211 has 16 divisors (see below), whose sum is σ = 15286786560. Its totient is φ = 7176280800.

The previous prime is 11112101207. The next prime is 11112101213. The reversal of 11112101211 is 11210121111.

It is not a de Polignac number, because 11112101211 - 2² = 11112101207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11112101213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429765 + ... + 454886.

It is an arithmetic number, because the mean of its divisors is an integer number (955424160).

Almost surely, 2^11112101211 is an apocalyptic number.

11112101211 is a deficient number, since it is larger than the sum of its proper divisors (4174685349).

11112101211 is an equidigital number, since it uses as much as digits as its factorization.

11112101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884786.

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

Adding to 11112101211 its reverse (11210121111), we get a palindrome (22322222322).

It can be divided in two parts, 11 and 112101211, that multiplied together give a palindrome (1233113321).

The spelling of 11112101211 in words is "eleven billion, one hundred twelve million, one hundred one thousand, two hundred eleven".