11211201002221 has 8 divisors (see below), whose sum is σ = 12351494174688. Its totient is φ = 10091090010000.

The previous prime is 11211201002207. The next prime is 11211201002227. The reversal of 11211201002221 is 12220010211211.

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 11211201002221 - 2²¹ = 11211198905069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211201002195 and 11211201002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211201002227) 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, 5045543895 + ... + 5045546116.

It is an arithmetic number, because the mean of its divisors is an integer number (1543936771836).

Almost surely, 2^{11211201002221} is an apocalyptic number.

11211201002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11211201002221 is a deficient number, since it is larger than the sum of its proper divisors (1140293172467).

11211201002221 is a wasteful number, since it uses less digits than its factorization.

11211201002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091090123.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11211201002221 its reverse (12220010211211), we get a palindrome (23431211213432).

The spelling of 11211201002221 in words is "eleven trillion, two hundred eleven billion, two hundred one million, two thousand, two hundred twenty-one".