120220012121609 has 2 divisors, whose sum is σ = 120220012121610. Its totient is φ = 120220012121608.

The previous prime is 120220012121591. The next prime is 120220012121647. The reversal of 120220012121609 is 906121210022021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83742905743225 + 36477106378384 = 9151115^2 + 6039628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120220012121609 is a prime.

It is not a weakly prime, because it can be changed into another prime (120220012121009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110006060804 + 60110006060805.

It is an arithmetic number, because the mean of its divisors is an integer number (60110006060805).

Almost surely, 2^{120220012121609} is an apocalyptic number.

It is an amenable number.

120220012121609 is a deficient number, since it is larger than the sum of its proper divisors (1).

120220012121609 is an equidigital number, since it uses as much as digits as its factorization.

120220012121609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 120220012121609 in words is "one hundred twenty trillion, two hundred twenty billion, twelve million, one hundred twenty-one thousand, six hundred nine".