212002003261 has 2 divisors, whose sum is σ = 212002003262. Its totient is φ = 212002003260.

The previous prime is 212002003181. The next prime is 212002003271. The reversal of 212002003261 is 162300200212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178290840025 + 33711163236 = 422245^2 + 183606^2 .

It is a cyclic number.

It is not a de Polignac number, because 212002003261 - 2⁹ = 212002002749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212002003271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106001001630 + 106001001631.

It is an arithmetic number, because the mean of its divisors is an integer number (106001001631).

Almost surely, 2^212002003261 is an apocalyptic number.

It is an amenable number.

212002003261 is a deficient number, since it is larger than the sum of its proper divisors (1).

212002003261 is an equidigital number, since it uses as much as digits as its factorization.

212002003261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212002003261 its reverse (162300200212), we get a palindrome (374302203473).

The spelling of 212002003261 in words is "two hundred twelve billion, two million, three thousand, two hundred sixty-one".