212021010277 has 2 divisors, whose sum is σ = 212021010278. Its totient is φ = 212021010276.

The previous prime is 212021010263. The next prime is 212021010337. The reversal of 212021010277 is 772010120212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188073138276 + 23947872001 = 433674^2 + 154751^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021010277 - 2²⁷ = 211886792549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021010217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010505138 + 106010505139.

It is an arithmetic number, because the mean of its divisors is an integer number (106010505139).

Almost surely, 2^212021010277 is an apocalyptic number.

It is an amenable number.

212021010277 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021010277 is an equidigital number, since it uses as much as digits as its factorization.

212021010277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 212021010277 its reverse (772010120212), we get a palindrome (984031130489).

The spelling of 212021010277 in words is "two hundred twelve billion, twenty-one million, ten thousand, two hundred seventy-seven".