101121011011 has 4 divisors (see below), whose sum is σ = 101163915792. Its totient is φ = 101078106232.

The previous prime is 101121011009. The next prime is 101121011023. The reversal of 101121011011 is 110110121101.

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 101121011011 - 2¹ = 101121011009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101121011051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21448855 + ... + 21453568.

It is an arithmetic number, because the mean of its divisors is an integer number (25290978948).

Almost surely, 2^101121011011 is an apocalyptic number.

101121011011 is a deficient number, since it is larger than the sum of its proper divisors (42904781).

101121011011 is an equidigital number, since it uses as much as digits as its factorization.

101121011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42904780.

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

Adding to 101121011011 its reverse (110110121101), we get a palindrome (211231132112).

The spelling of 101121011011 in words is "one hundred one billion, one hundred twenty-one million, eleven thousand, eleven".