11220999973 has 2 divisors, whose sum is σ = 11220999974. Its totient is φ = 11220999972.

The previous prime is 11220999961. The next prime is 11220999983. The reversal of 11220999973 is 37999902211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9592635364 + 1628364609 = 97942^2 + 40353^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220999973 - 2¹³ = 11220991781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11220999973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220999943) 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, 5610499986 + 5610499987.

It is an arithmetic number, because the mean of its divisors is an integer number (5610499987).

Almost surely, 2^11220999973 is an apocalyptic number.

It is an amenable number.

11220999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220999973 is an equidigital number, since it uses as much as digits as its factorization.

11220999973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 52.

The spelling of 11220999973 in words is "eleven billion, two hundred twenty million, nine hundred ninety-nine thousand, nine hundred seventy-three".