11220020011001 has 2 divisors, whose sum is σ = 11220020011002. Its totient is φ = 11220020011000.

The previous prime is 11220020010959. The next prime is 11220020011003. The reversal of 11220020011001 is 10011002002211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7236207600400 + 3983812410601 = 2690020^2 + 1995949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11220020011001 is a prime.

It is a super-2 number, since 2×11220020011001² (a number of 27 digits) contains 22 as substring.

Together with 11220020011003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11220020011003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610010005500 + 5610010005501.

It is an arithmetic number, because the mean of its divisors is an integer number (5610010005501).

Almost surely, 2^{11220020011001} is an apocalyptic number.

It is an amenable number.

11220020011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220020011001 is an equidigital number, since it uses as much as digits as its factorization.

11220020011001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11220020011001 its reverse (10011002002211), we get a palindrome (21231022013212).

The spelling of 11220020011001 in words is "eleven trillion, two hundred twenty billion, twenty million, eleven thousand, one".