11222011993 has 2 divisors, whose sum is σ = 11222011994. Its totient is φ = 11222011992.

The previous prime is 11222011991. The next prime is 11222012003. The reversal of 11222011993 is 39911022211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6722688064 + 4499323929 = 81992^2 + 67077^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222011993 - 2¹ = 11222011991 is a prime.

Together with 11222011991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11222011991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611005996 + 5611005997.

It is an arithmetic number, because the mean of its divisors is an integer number (5611005997).

Almost surely, 2^11222011993 is an apocalyptic number.

It is an amenable number.

11222011993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222011993 is an equidigital number, since it uses as much as digits as its factorization.

11222011993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 11222011993 in words is "eleven billion, two hundred twenty-two million, eleven thousand, nine hundred ninety-three".