101121111011 has 4 divisors (see below), whose sum is σ = 101183959800. Its totient is φ = 101058262224.

The previous prime is 101121110947. The next prime is 101121111029. The reversal of 101121111011 is 110111121101.

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 101121111011 - 2⁶ = 101121110947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101121110983 and 101121111001.

It is not an unprimeable number, because it can be changed into a prime (101121111911) 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, 31421981 + ... + 31425198.

It is an arithmetic number, because the mean of its divisors is an integer number (25295989950).

Almost surely, 2^101121111011 is an apocalyptic number.

101121111011 is a deficient number, since it is larger than the sum of its proper divisors (62848789).

101121111011 is an equidigital number, since it uses as much as digits as its factorization.

101121111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62848788.

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

Adding to 101121111011 its reverse (110111121101), we get a palindrome (211232232112).

The spelling of 101121111011 in words is "one hundred one billion, one hundred twenty-one million, one hundred eleven thousand, eleven".