2021206937 has 2 divisors, whose sum is σ = 2021206938. Its totient is φ = 2021206936.

The previous prime is 2021206919. The next prime is 2021206963. The reversal of 2021206937 is 7396021202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1604883721 + 416323216 = 40061^2 + 20404^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021206937 - 2²⁸ = 1752771481 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021206907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010603468 + 1010603469.

It is an arithmetic number, because the mean of its divisors is an integer number (1010603469).

Almost surely, 2^2021206937 is an apocalyptic number.

It is an amenable number.

2021206937 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021206937 is an equidigital number, since it uses as much as digits as its factorization.

2021206937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 2021206937 is about 44957.8351013480. The cubic root of 2021206937 is about 1264.3585799760.

The spelling of 2021206937 in words is "two billion, twenty-one million, two hundred six thousand, nine hundred thirty-seven".