11201000021221 has 8 divisors (see below), whose sum is σ = 11221593299840. Its totient is φ = 11180410829568.

The previous prime is 11201000021203. The next prime is 11201000021249. The reversal of 11201000021221 is 12212000010211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201000021221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201000021021) 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, 4491940 + ... + 6525298.

It is an arithmetic number, because the mean of its divisors is an integer number (1402699162480).

Almost surely, 2^{11201000021221} is an apocalyptic number.

It is an amenable number.

11201000021221 is a deficient number, since it is larger than the sum of its proper divisors (20593278619).

11201000021221 is an equidigital number, since it uses as much as digits as its factorization.

11201000021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043483.

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

Adding to 11201000021221 its reverse (12212000010211), we get a palindrome (23413000031432).

The spelling of 11201000021221 in words is "eleven trillion, two hundred one billion, twenty-one thousand, two hundred twenty-one".