11220011002121 has 16 divisors (see below), whose sum is σ = 11490948142080. Its totient is φ = 10950421285440.

The previous prime is 11220011002097. The next prime is 11220011002127. The reversal of 11220011002121 is 12120011002211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11220011002121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220011002096 and 11220011002105.

It is not an unprimeable number, because it can be changed into a prime (11220011002127) 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, 282536015 + ... + 282575723.

It is an arithmetic number, because the mean of its divisors is an integer number (718184258880).

Almost surely, 2^{11220011002121} is an apocalyptic number.

It is an amenable number.

11220011002121 is a deficient number, since it is larger than the sum of its proper divisors (270937139959).

11220011002121 is a wasteful number, since it uses less digits than its factorization.

11220011002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56504.

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

Adding to 11220011002121 its reverse (12120011002211), we get a palindrome (23340022004332).

The spelling of 11220011002121 in words is "eleven trillion, two hundred twenty billion, eleven million, two thousand, one hundred twenty-one".