200121012201277 has 2 divisors, whose sum is σ = 200121012201278. Its totient is φ = 200121012201276.

The previous prime is 200121012201217. The next prime is 200121012201283. The reversal of 200121012201277 is 772102210121002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189832898216196 + 10288113985081 = 13777986^2 + 3207509^2 .

It is a cyclic number.

It is not a de Polignac number, because 200121012201277 - 2¹⁵ = 200121012168509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121012201217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060506100638 + 100060506100639.

It is an arithmetic number, because the mean of its divisors is an integer number (100060506100639).

Almost surely, 2^{200121012201277} is an apocalyptic number.

It is an amenable number.

200121012201277 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121012201277 is an equidigital number, since it uses as much as digits as its factorization.

200121012201277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 28.

Adding to 200121012201277 its reverse (772102210121002), we get a palindrome (972223222322279).

The spelling of 200121012201277 in words is "two hundred trillion, one hundred twenty-one billion, twelve million, two hundred one thousand, two hundred seventy-seven".