11102202101221 has 16 divisors (see below), whose sum is σ = 13964199504768. Its totient is φ = 8574508454400.

The previous prime is 11102202101197. The next prime is 11102202101251. The reversal of 11102202101221 is 12210120220111.

It is not a de Polignac number, because 11102202101221 - 2²⁵ = 11102168546789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102202101195 and 11102202101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102202101251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637975560 + ... + 637992961.

It is an arithmetic number, because the mean of its divisors is an integer number (872762469048).

Almost surely, 2^{11102202101221} is an apocalyptic number.

11102202101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11102202101221 is a deficient number, since it is larger than the sum of its proper divisors (2861997403547).

11102202101221 is a wasteful number, since it uses less digits than its factorization.

11102202101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275968652.

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

Adding to 11102202101221 its reverse (12210120220111), we get a palindrome (23312322321332).

The spelling of 11102202101221 in words is "eleven trillion, one hundred two billion, two hundred two million, one hundred one thousand, two hundred twenty-one".