11201012021221 has 32 divisors (see below), whose sum is σ = 12589676315136. Its totient is φ = 9878656320000.

The previous prime is 11201012021209. The next prime is 11201012021261. The reversal of 11201012021221 is 12212021010211.

It is a cyclic number.

It is not a de Polignac number, because 11201012021221 - 2⁵ = 11201012021189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201012021195 and 11201012021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201012021261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44684980 + ... + 44934946.

It is an arithmetic number, because the mean of its divisors is an integer number (393427384848).

Almost surely, 2^{11201012021221} is an apocalyptic number.

11201012021221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11201012021221 is a deficient number, since it is larger than the sum of its proper divisors (1388664293915).

11201012021221 is a wasteful number, since it uses less digits than its factorization.

11201012021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250893.

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

Adding to 11201012021221 its reverse (12212021010211), we get a palindrome (23413033031432).

The spelling of 11201012021221 in words is "eleven trillion, two hundred one billion, twelve million, twenty-one thousand, two hundred twenty-one".