10111210121111 has 4 divisors (see below), whose sum is σ = 11030411041224. Its totient is φ = 9192009201000.

The previous prime is 10111210121059. The next prime is 10111210121137. The reversal of 10111210121111 is 11112101211101.

10111210121111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111210121111 is a prime.

It is a super-2 number, since 2×10111210121111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111210121161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459600460040 + ... + 459600460061.

It is an arithmetic number, because the mean of its divisors is an integer number (2757602760306).

Almost surely, 2^{10111210121111} is an apocalyptic number.

10111210121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10111210121111 is a deficient number, since it is larger than the sum of its proper divisors (919200920113).

10111210121111 is an equidigital number, since it uses as much as digits as its factorization.

10111210121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919200920112.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 10111210121111 its reverse (11112101211101), we get a palindrome (21223311332212).

The spelling of 10111210121111 in words is "ten trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, one hundred eleven".