11010120121 has 72 divisors (see below), whose sum is σ = 15294557376. Its totient is φ = 7790791680.

The previous prime is 11010120119. The next prime is 11010120127. The reversal of 11010120121 is 12102101011.

It is not a de Polignac number, because 11010120121 - 2¹ = 11010120119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11010120098 and 11010120107.

It is not an unprimeable number, because it can be changed into a prime (11010120127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65928780 + ... + 65928946.

It is an arithmetic number, because the mean of its divisors is an integer number (212424408).

Almost surely, 2^11010120121 is an apocalyptic number.

11010120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11010120121 is a deficient number, since it is larger than the sum of its proper divisors (4284437255).

11010120121 is a wasteful number, since it uses less digits than its factorization.

11010120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 295 counting only the distinct ones).

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

Adding to 11010120121 its reverse (12102101011), we get a palindrome (23112221132).

It can be divided in two parts, 11010 and 120121, that added together give a palindrome (131131).

The spelling of 11010120121 in words is "eleven billion, ten million, one hundred twenty thousand, one hundred twenty-one".