10121120111 has 4 divisors (see below), whose sum is σ = 10153456272. Its totient is φ = 10088783952.

The previous prime is 10121120069. The next prime is 10121120161. The reversal of 10121120111 is 11102112101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11102112101 = 37717 ⋅294353.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121120111 is a prime.

It is a super-3 number, since 3×10121120111³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121120092 and 10121120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121120161) 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, 16167611 + ... + 16168236.

It is an arithmetic number, because the mean of its divisors is an integer number (2538364068).

Almost surely, 2^10121120111 is an apocalyptic number.

10121120111 is a deficient number, since it is larger than the sum of its proper divisors (32336161).

10121120111 is an equidigital number, since it uses as much as digits as its factorization.

10121120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32336160.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10121120111 its reverse (11102112101), we get a palindrome (21223232212).

The spelling of 10121120111 in words is "ten billion, one hundred twenty-one million, one hundred twenty thousand, one hundred eleven".