11020010121 has 64 divisors (see below), whose sum is σ = 17364480000. Its totient is φ = 6896425536.

The previous prime is 11020010119. The next prime is 11020010137. The reversal of 11020010121 is 12101002011.

It is a happy number.

It is not a de Polignac number, because 11020010121 - 2¹ = 11020010119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11020010191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4143090 + ... + 4145748.

It is an arithmetic number, because the mean of its divisors is an integer number (271320000).

Almost surely, 2^11020010121 is an apocalyptic number.

It is an amenable number.

11020010121 is a deficient number, since it is larger than the sum of its proper divisors (6344469879).

11020010121 is a wasteful number, since it uses less digits than its factorization.

11020010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843 (or 2837 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11020010121 its reverse (12101002011), we get a palindrome (23121012132).

The spelling of 11020010121 in words is "eleven billion, twenty million, ten thousand, one hundred twenty-one".