11120001001221 has 16 divisors (see below), whose sum is σ = 17338827697664. Its totient is φ = 6206512186224.

The previous prime is 11120001001169. The next prime is 11120001001271. The reversal of 11120001001221 is 12210010002111.

It is not a de Polignac number, because 11120001001221 - 2⁶ = 11120001001157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11120001001197 and 11120001001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120001001271) 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, 6157253251 + ... + 6157255056.

It is an arithmetic number, because the mean of its divisors is an integer number (1083676731104).

Almost surely, 2^{11120001001221} is an apocalyptic number.

It is an amenable number.

11120001001221 is a deficient number, since it is larger than the sum of its proper divisors (6218826696443).

11120001001221 is a wasteful number, since it uses less digits than its factorization.

11120001001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12314508360.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11120001001221 its reverse (12210010002111), we get a palindrome (23330011003332).

The spelling of 11120001001221 in words is "eleven trillion, one hundred twenty billion, one million, one thousand, two hundred twenty-one".