211201020977 has 2 divisors, whose sum is σ = 211201020978. Its totient is φ = 211201020976.

The previous prime is 211201020949. The next prime is 211201021021. The reversal of 211201020977 is 779020102112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202244480656 + 8956540321 = 449716^2 + 94639^2 .

It is a cyclic number.

It is not a de Polignac number, because 211201020977 - 2⁶ = 211201020913 is a prime.

It is not a weakly prime, because it can be changed into another prime (211201025977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105600510488 + 105600510489.

It is an arithmetic number, because the mean of its divisors is an integer number (105600510489).

Almost surely, 2^211201020977 is an apocalyptic number.

It is an amenable number.

211201020977 is a deficient number, since it is larger than the sum of its proper divisors (1).

211201020977 is an equidigital number, since it uses as much as digits as its factorization.

211201020977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 32.

The spelling of 211201020977 in words is "two hundred eleven billion, two hundred one million, twenty thousand, nine hundred seventy-seven".