11201010000021 has 32 divisors (see below), whose sum is σ = 16907736182400. Its totient is φ = 7326684593280.

The previous prime is 11201010000001. The next prime is 11201010000029. The reversal of 11201010000021 is 12000001010211.

It is a happy number.

It is not a de Polignac number, because 11201010000021 - 2⁵ = 11201009999989 is a prime.

It is a super-3 number, since 3×11201010000021³ (a number of 40 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 11201009999958 and 11201010000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201010000029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5918026 + ... + 7577931.

It is an arithmetic number, because the mean of its divisors is an integer number (528366755700).

Almost surely, 2^{11201010000021} is an apocalyptic number.

It is an amenable number.

11201010000021 is a deficient number, since it is larger than the sum of its proper divisors (5706726182379).

11201010000021 is a wasteful number, since it uses less digits than its factorization.

11201010000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13496546 (or 13496540 counting only the distinct ones).

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

Adding to 11201010000021 its reverse (12000001010211), we get a palindrome (23201011010232).

The spelling of 11201010000021 in words is "eleven trillion, two hundred one billion, ten million, twenty-one", and thus it is an aban number.