11222120501 has 2 divisors, whose sum is σ = 11222120502. Its totient is φ = 11222120500.

The previous prime is 11222120491. The next prime is 11222120549. The reversal of 11222120501 is 10502122211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9257326225 + 1964794276 = 96215^2 + 44326^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222120501 - 2¹⁰ = 11222119477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11222120501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222120101) 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 as a sum of consecutive naturals, namely, 5611060250 + 5611060251.

It is an arithmetic number, because the mean of its divisors is an integer number (5611060251).

Almost surely, 2^11222120501 is an apocalyptic number.

It is an amenable number.

11222120501 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222120501 is an equidigital number, since it uses as much as digits as its factorization.

11222120501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 11222120501 its reverse (10502122211), we get a palindrome (21724242712).

The spelling of 11222120501 in words is "eleven billion, two hundred twenty-two million, one hundred twenty thousand, five hundred one".