11202012001221 has 4 divisors (see below), whose sum is σ = 14936016001632. Its totient is φ = 7468008000812.

The previous prime is 11202012001217. The next prime is 11202012001241. The reversal of 11202012001221 is 12210021020211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11202012001221 - 2² = 11202012001217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11202012001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202012001241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1867002000201 + ... + 1867002000206.

It is an arithmetic number, because the mean of its divisors is an integer number (3734004000408).

Almost surely, 2^{11202012001221} is an apocalyptic number.

It is an amenable number.

11202012001221 is a deficient number, since it is larger than the sum of its proper divisors (3734004000411).

11202012001221 is an equidigital number, since it uses as much as digits as its factorization.

11202012001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734004000410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11202012001221 its reverse (12210021020211), we get a palindrome (23412033021432).

The spelling of 11202012001221 in words is "eleven trillion, two hundred two billion, twelve million, one thousand, two hundred twenty-one".