11102001021221 has 8 divisors (see below), whose sum is σ = 12191480954688. Its totient is φ = 10025888940000.

The previous prime is 11102001021211. The next prime is 11102001021247. The reversal of 11102001021221 is 12212010020111.

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 11102001021221 - 2⁶ = 11102001021157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102001021196 and 11102001021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102001021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3341961320 + ... + 3341964641.

It is an arithmetic number, because the mean of its divisors is an integer number (1523935119336).

Almost surely, 2^{11102001021221} is an apocalyptic number.

11102001021221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11102001021221 is a deficient number, since it is larger than the sum of its proper divisors (1089479933467).

11102001021221 is a wasteful number, since it uses less digits than its factorization.

11102001021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6683926123.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11102001021221 its reverse (12212010020111), we get a palindrome (23314011041332).

The spelling of 11102001021221 in words is "eleven trillion, one hundred two billion, one million, twenty-one thousand, two hundred twenty-one".