11220011022121 has 4 divisors (see below), whose sum is σ = 12240012024144. Its totient is φ = 10200010020100.

The previous prime is 11220011022079. The next prime is 11220011022139. The reversal of 11220011022121 is 12122011002211.

11220011022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11220011022121 - 2¹⁷ = 11220010891049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220011022095 and 11220011022104.

It is not an unprimeable number, because it can be changed into a prime (11220011022151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510000500995 + ... + 510000501016.

It is an arithmetic number, because the mean of its divisors is an integer number (3060003006036).

Almost surely, 2^{11220011022121} is an apocalyptic number.

11220011022121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220011022121 is a deficient number, since it is larger than the sum of its proper divisors (1020001002023).

11220011022121 is a wasteful number, since it uses less digits than its factorization.

11220011022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020001002022.

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

Adding to 11220011022121 its reverse (12122011002211), we get a palindrome (23342022024332).

The spelling of 11220011022121 in words is "eleven trillion, two hundred twenty billion, eleven million, twenty-two thousand, one hundred twenty-one".