1201120100977 has 2 divisors, whose sum is σ = 1201120100978. Its totient is φ = 1201120100976.

The previous prime is 1201120100953. The next prime is 1201120100981. The reversal of 1201120100977 is 7790010211021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894066693601 + 307053407376 = 945551^2 + 554124^2 .

It is an emirp because it is prime and its reverse (7790010211021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201120100977 - 2²⁷ = 1200985883249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201120100177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600560050488 + 600560050489.

It is an arithmetic number, because the mean of its divisors is an integer number (600560050489).

Almost surely, 2^{1201120100977} is an apocalyptic number.

It is an amenable number.

1201120100977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201120100977 is an equidigital number, since it uses as much as digits as its factorization.

1201120100977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 31.

Adding to 1201120100977 its reverse (7790010211021), we get a palindrome (8991130311998).

The spelling of 1201120100977 in words is "one trillion, two hundred one billion, one hundred twenty million, one hundred thousand, nine hundred seventy-seven".