10111212231111 has 48 divisors (see below), whose sum is σ = 15189491160480. Its totient is φ = 6721468646400.

The previous prime is 10111212231103. The next prime is 10111212231121. The reversal of 10111212231111 is 11113221211101.

10111212231111 is a `hidden beast` number, since 1 + 0 + 111 + 212 + 231 + 111 = 666.

10111212231111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10111212231111 - 2³ = 10111212231103 is a prime.

It is a super-2 number, since 2×10111212231111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111212231121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 358526811 + ... + 358555011.

It is an arithmetic number, because the mean of its divisors is an integer number (316447732510).

Almost surely, 2^{10111212231111} is an apocalyptic number.

10111212231111 is a deficient number, since it is larger than the sum of its proper divisors (5078278929369).

10111212231111 is an equidigital number, since it uses as much as digits as its factorization.

10111212231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32398 (or 32386 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 10111212231111 its reverse (11113221211101), we get a palindrome (21224433442212).

The spelling of 10111212231111 in words is "ten trillion, one hundred eleven billion, two hundred twelve million, two hundred thirty-one thousand, one hundred eleven".