101121101111 has 4 divisors (see below), whose sum is σ = 101131991832. Its totient is φ = 101110210392.

The previous prime is 101121101101. The next prime is 101121101143. The reversal of 101121101111 is 111101121101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 101121101111 - 2¹⁸ = 101120838967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101121101092 and 101121101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121101101) 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, 5431421 + ... + 5450006.

It is an arithmetic number, because the mean of its divisors is an integer number (25282997958).

Almost surely, 2^101121101111 is an apocalyptic number.

101121101111 is a deficient number, since it is larger than the sum of its proper divisors (10890721).

101121101111 is an equidigital number, since it uses as much as digits as its factorization.

101121101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10890720.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 101121101111 its reverse (111101121101), we get a palindrome (212222222212).

It can be divided in two parts, 101121101 and 111, that multiplied together give a palindrome (11224442211).

The spelling of 101121101111 in words is "one hundred one billion, one hundred twenty-one million, one hundred one thousand, one hundred eleven".