101011211121 has 16 divisors (see below), whose sum is σ = 138437013248. Its totient is φ = 65466144000.

The previous prime is 101011211117. The next prime is 101011211123. The reversal of 101011211121 is 121112110101.

It is not a de Polignac number, because 101011211121 - 2² = 101011211117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101011211097 and 101011211106.

It is not an unprimeable number, because it can be changed into a prime (101011211123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245545 + ... + 512166.

It is an arithmetic number, because the mean of its divisors is an integer number (8652313328).

Almost surely, 2^101011211121 is an apocalyptic number.

It is an amenable number.

101011211121 is a deficient number, since it is larger than the sum of its proper divisors (37425802127).

101011211121 is a wasteful number, since it uses less digits than its factorization.

101011211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758952.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 101011211121 its reverse (121112110101), we get a palindrome (222123321222).

It can be divided in two parts, 10101 and 1211121, that multiplied together give a palindrome (12233533221).

The spelling of 101011211121 in words is "one hundred one billion, eleven million, two hundred eleven thousand, one hundred twenty-one".