101211020011 has 6 divisors (see below), whose sum is σ = 103156695740. Its totient is φ = 99301375368.

The previous prime is 101211019999. The next prime is 101211020039. The reversal of 101211020011 is 110020112101.

It is not a de Polignac number, because 101211020011 - 2⁹ = 101211019499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101211020011.

It is not an unprimeable number, because it can be changed into a prime (101211021011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18012681 + ... + 18018298.

Almost surely, 2^101211020011 is an apocalyptic number.

101211020011 is a deficient number, since it is larger than the sum of its proper divisors (1945675729).

101211020011 is an frugal number, since it uses more digits than its factorization.

101211020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36031085 (or 36031032 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101211020011 its reverse (110020112101), we get a palindrome (211231132112).

It can be divided in two parts, 101 and 211020011, that added together give a palindrome (211020112).

The spelling of 101211020011 in words is "one hundred one billion, two hundred eleven million, twenty thousand, eleven".