11222011123 has 2 divisors, whose sum is σ = 11222011124. Its totient is φ = 11222011122.

The previous prime is 11222011109. The next prime is 11222011153. The reversal of 11222011123 is 32111022211.

It is a weak prime.

It is an emirp because it is prime and its reverse (32111022211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11222011123 - 2⁵ = 11222011091 is a prime.

It is a super-2 number, since 2×11222011123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11222011097 and 11222011106.

It is not a weakly prime, because it can be changed into another prime (11222011103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611005561 + 5611005562.

It is an arithmetic number, because the mean of its divisors is an integer number (5611005562).

Almost surely, 2^11222011123 is an apocalyptic number.

11222011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222011123 is an equidigital number, since it uses as much as digits as its factorization.

11222011123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11222011123 its reverse (32111022211), we get a palindrome (43333033334).

The spelling of 11222011123 in words is "eleven billion, two hundred twenty-two million, eleven thousand, one hundred twenty-three".