10121101111 has 4 divisors (see below), whose sum is σ = 11041201224. Its totient is φ = 9201001000.

The previous prime is 10121101073. The next prime is 10121101121. The reversal of 10121101111 is 11110112101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11110112101 = 11 ⋅1010010191.

It is a cyclic number.

It is not a de Polignac number, because 10121101111 - 2³³ = 1531166519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121101121) 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, 460050040 + ... + 460050061.

It is an arithmetic number, because the mean of its divisors is an integer number (2760300306).

Almost surely, 2^10121101111 is an apocalyptic number.

10121101111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10121101111 is a deficient number, since it is larger than the sum of its proper divisors (920100113).

10121101111 is an equidigital number, since it uses as much as digits as its factorization.

10121101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920100112.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 10121101111 its reverse (11110112101), we get a palindrome (21231213212).

It can be divided in two parts, 10 and 121101111, that added together give a palindrome (121101121).

The spelling of 10121101111 in words is "ten billion, one hundred twenty-one million, one hundred one thousand, one hundred eleven".