1200022211123 has 2 divisors, whose sum is σ = 1200022211124. Its totient is φ = 1200022211122.

The previous prime is 1200022211099. The next prime is 1200022211327. The reversal of 1200022211123 is 3211122200021.

It is a weak prime.

It is an emirp because it is prime and its reverse (3211122200021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200022211123 is a prime.

It is a super-2 number, since 2×1200022211123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200022211623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600011105561 + 600011105562.

It is an arithmetic number, because the mean of its divisors is an integer number (600011105562).

Almost surely, 2^{1200022211123} is an apocalyptic number.

1200022211123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200022211123 is an equidigital number, since it uses as much as digits as its factorization.

1200022211123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1200022211123 its reverse (3211122200021), we get a palindrome (4411144411144).

The spelling of 1200022211123 in words is "one trillion, two hundred billion, twenty-two million, two hundred eleven thousand, one hundred twenty-three".