1201204220977 has 2 divisors, whose sum is σ = 1201204220978. Its totient is φ = 1201204220976.

The previous prime is 1201204220933. The next prime is 1201204220981. The reversal of 1201204220977 is 7790224021021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 963334398016 + 237869822961 = 981496^2 + 487719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201204220977 - 2³⁹ = 651448407089 is a prime.

It is a super-2 number, since 2×1201204220977² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201204220917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600602110488 + 600602110489.

It is an arithmetic number, because the mean of its divisors is an integer number (600602110489).

Almost surely, 2^{1201204220977} is an apocalyptic number.

It is an amenable number.

1201204220977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201204220977 is an equidigital number, since it uses as much as digits as its factorization.

1201204220977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

Adding to 1201204220977 its reverse (7790224021021), we get a palindrome (8991428241998).

The spelling of 1201204220977 in words is "one trillion, two hundred one billion, two hundred four million, two hundred twenty thousand, nine hundred seventy-seven".