1212201210977 has 2 divisors, whose sum is σ = 1212201210978. Its totient is φ = 1212201210976.

The previous prime is 1212201210949. The next prime is 1212201211043. The reversal of 1212201210977 is 7790121022121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034866736656 + 177334474321 = 1017284^2 + 421111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212201210977 - 2³² = 1207906243681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212201210907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606100605488 + 606100605489.

It is an arithmetic number, because the mean of its divisors is an integer number (606100605489).

Almost surely, 2^{1212201210977} is an apocalyptic number.

It is an amenable number.

1212201210977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212201210977 is an equidigital number, since it uses as much as digits as its factorization.

1212201210977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 35.

The spelling of 1212201210977 in words is "one trillion, two hundred twelve billion, two hundred one million, two hundred ten thousand, nine hundred seventy-seven".