1221120122323 has 2 divisors, whose sum is σ = 1221120122324. Its totient is φ = 1221120122322.

The previous prime is 1221120122303. The next prime is 1221120122329. The reversal of 1221120122323 is 3232210211221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221120122323 - 2¹⁷ = 1221119991251 is a prime.

It is a super-2 number, since 2×1221120122323² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221120122294 and 1221120122303.

It is not a weakly prime, because it can be changed into another prime (1221120122329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610560061161 + 610560061162.

It is an arithmetic number, because the mean of its divisors is an integer number (610560061162).

Almost surely, 2^{1221120122323} is an apocalyptic number.

1221120122323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221120122323 is an equidigital number, since it uses as much as digits as its factorization.

1221120122323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1221120122323 its reverse (3232210211221), we get a palindrome (4453330333544).

The spelling of 1221120122323 in words is "one trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, three hundred twenty-three".