1200122311 has 2 divisors, whose sum is σ = 1200122312. Its totient is φ = 1200122310.

The previous prime is 1200122237. The next prime is 1200122377. The reversal of 1200122311 is 1132210021.

It is a strong prime.

It is an emirp because it is prime and its reverse (1132210021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200122311 - 2⁹ = 1200121799 is a prime.

It is a super-2 number, since 2×1200122311² = 2880587122719961442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200122291 and 1200122300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200122711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600061155 + 600061156.

It is an arithmetic number, because the mean of its divisors is an integer number (600061156).

Almost surely, 2^1200122311 is an apocalyptic number.

1200122311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200122311 is an equidigital number, since it uses as much as digits as its factorization.

1200122311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1200122311 is about 34642.7815136141. The cubic root of 1200122311 is about 1062.6946720761.

Adding to 1200122311 its reverse (1132210021), we get a palindrome (2332332332).

The spelling of 1200122311 in words is "one billion, two hundred million, one hundred twenty-two thousand, three hundred eleven".