11201000010021 has 12 divisors (see below), whose sum is σ = 16778452690272. Its totient is φ = 7467333339852.

The previous prime is 11201000010017. The next prime is 11201000010047. The reversal of 11201000010021 is 12001000010211.

It is a happy number.

It is not a de Polignac number, because 11201000010021 - 2² = 11201000010017 is a prime.

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 = 11201000009985 and 11201000010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201000010121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23047324881 + ... + 23047325366.

It is an arithmetic number, because the mean of its divisors is an integer number (1398204390856).

Almost surely, 2^{11201000010021} is an apocalyptic number.

It is an amenable number.

11201000010021 is a deficient number, since it is larger than the sum of its proper divisors (5577452680251).

11201000010021 is an frugal number, since it uses more digits than its factorization.

11201000010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46094650262 (or 46094650250 counting only the distinct ones).

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

Adding to 11201000010021 its reverse (12001000010211), we get a palindrome (23202000020232).

The spelling of 11201000010021 in words is "eleven trillion, two hundred one billion, ten thousand, twenty-one".