1202220146549 has 2 divisors, whose sum is σ = 1202220146550. Its totient is φ = 1202220146548.

The previous prime is 1202220146497. The next prime is 1202220146593. The reversal of 1202220146549 is 9456410222021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 886817724100 + 315402422449 = 941710^2 + 561607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202220146549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202220143549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601110073274 + 601110073275.

It is an arithmetic number, because the mean of its divisors is an integer number (601110073275).

Almost surely, 2^{1202220146549} is an apocalyptic number.

It is an amenable number.

1202220146549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202220146549 is an equidigital number, since it uses as much as digits as its factorization.

1202220146549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 1202220146549 in words is "one trillion, two hundred two billion, two hundred twenty million, one hundred forty-six thousand, five hundred forty-nine".