10011021200221 has 8 divisors (see below), whose sum is σ = 10799903004984. Its totient is φ = 9244361418240.

The previous prime is 10011021200207. The next prime is 10011021200237. The reversal of 10011021200221 is 12200212011001.

It can be written as a sum of positive squares in 4 ways, for example, as 1890721251225 + 8120299948996 = 1375035^2 + 2849614^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10011021200221 - 2²⁹ = 10010484329309 is a prime.

It is a super-2 number, since 2×10011021200221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011021200261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5555504760 + ... + 5555506561.

It is an arithmetic number, because the mean of its divisors is an integer number (1349987875623).

Almost surely, 2^{10011021200221} is an apocalyptic number.

It is an amenable number.

10011021200221 is a deficient number, since it is larger than the sum of its proper divisors (788881804763).

10011021200221 is a wasteful number, since it uses less digits than its factorization.

10011021200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111011391.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10011021200221 its reverse (12200212011001), we get a palindrome (22211233211222).

The spelling of 10011021200221 in words is "ten trillion, eleven billion, twenty-one million, two hundred thousand, two hundred twenty-one".