11120010021 has 16 divisors (see below), whose sum is σ = 16475757120. Its totient is φ = 7412589360.

The previous prime is 11120009987. The next prime is 11120010023. The reversal of 11120010021 is 12001002111.

It is a happy number.

It is not a de Polignac number, because 11120010021 - 2²⁶ = 11052901157 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11120009985 and 11120010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120010023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420826 + ... + 446468.

It is an arithmetic number, because the mean of its divisors is an integer number (1029734820).

Almost surely, 2^11120010021 is an apocalyptic number.

It is an amenable number.

11120010021 is a deficient number, since it is larger than the sum of its proper divisors (5355747099).

11120010021 is a wasteful number, since it uses less digits than its factorization.

11120010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41713 (or 41707 counting only the distinct ones).

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

Adding to 11120010021 its reverse (12001002111), we get a palindrome (23121012132).

It can be divided in two parts, 11 and 120010021, that multiplied together give a palindrome (1320110231).

The spelling of 11120010021 in words is "eleven billion, one hundred twenty million, ten thousand, twenty-one".