121223121211349 has 2 divisors, whose sum is σ = 121223121211350. Its totient is φ = 121223121211348.

The previous prime is 121223121211243. The next prime is 121223121211363. The reversal of 121223121211349 is 943112121322121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98575211535025 + 22647909676324 = 9928505^2 + 4758982^2 .

It is a cyclic number.

It is not a de Polignac number, because 121223121211349 - 2²⁰ = 121223120162773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121223121217349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611560605674 + 60611560605675.

It is an arithmetic number, because the mean of its divisors is an integer number (60611560605675).

Almost surely, 2^{121223121211349} is an apocalyptic number.

It is an amenable number.

121223121211349 is a deficient number, since it is larger than the sum of its proper divisors (1).

121223121211349 is an equidigital number, since it uses as much as digits as its factorization.

121223121211349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The spelling of 121223121211349 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, one hundred twenty-one million, two hundred eleven thousand, three hundred forty-nine".