111212231211011 has 32 divisors (see below), whose sum is σ = 130689086760960. Its totient is φ = 92650249958400.

The previous prime is 111212231210999. The next prime is 111212231211019. The reversal of 111212231211011 is 110112132212111.

It is a cyclic number.

It is not a de Polignac number, because 111212231211011 - 2³⁴ = 111195051341827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111212231211019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1386490475 + ... + 1386570683.

It is an arithmetic number, because the mean of its divisors is an integer number (4084033961280).

Almost surely, 2^{111212231211011} is an apocalyptic number.

111212231211011 is a deficient number, since it is larger than the sum of its proper divisors (19476855549949).

111212231211011 is a wasteful number, since it uses less digits than its factorization.

111212231211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98355.

The product of its (nonzero) digits is 48, while the sum is 20.

Adding to 111212231211011 its reverse (110112132212111), we get a palindrome (221324363423122).

The spelling of 111212231211011 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred thirty-one million, two hundred eleven thousand, eleven".