1220011220149 has 2 divisors, whose sum is σ = 1220011220150. Its totient is φ = 1220011220148.

The previous prime is 1220011220137. The next prime is 1220011220257. The reversal of 1220011220149 is 9410221100221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1191994486225 + 28016733924 = 1091785^2 + 167382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220011220149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220011220749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610005610074 + 610005610075.

It is an arithmetic number, because the mean of its divisors is an integer number (610005610075).

Almost surely, 2^{1220011220149} is an apocalyptic number.

It is an amenable number.

1220011220149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220011220149 is an equidigital number, since it uses as much as digits as its factorization.

1220011220149 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 25.

The spelling of 1220011220149 in words is "one trillion, two hundred twenty billion, eleven million, two hundred twenty thousand, one hundred forty-nine".