1201998234977 has 2 divisors, whose sum is σ = 1201998234978. Its totient is φ = 1201998234976.

The previous prime is 1201998234893. The next prime is 1201998235007. The reversal of 1201998234977 is 7794328991021.

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., 813764563921 + 388233671056 = 902089^2 + 623084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201998234977 - 2³⁸ = 927120328033 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201998231977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600999117488 + 600999117489.

It is an arithmetic number, because the mean of its divisors is an integer number (600999117489).

Almost surely, 2^{1201998234977} is an apocalyptic number.

It is an amenable number.

1201998234977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201998234977 is an equidigital number, since it uses as much as digits as its factorization.

1201998234977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 1201998234977 in words is "one trillion, two hundred one billion, nine hundred ninety-eight million, two hundred thirty-four thousand, nine hundred seventy-seven".