212002003181 has 2 divisors, whose sum is σ = 212002003182. Its totient is φ = 212002003180.

The previous prime is 212002003159. The next prime is 212002003261. The reversal of 212002003181 is 181300200212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153769073956 + 58232929225 = 392134^2 + 241315^2 .

It is a cyclic number.

It is not a de Polignac number, because 212002003181 - 2¹⁸ = 212001741037 is a prime.

It is a super-2 number, since 2×212002003181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212002003121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106001001590 + 106001001591.

It is an arithmetic number, because the mean of its divisors is an integer number (106001001591).

Almost surely, 2^212002003181 is an apocalyptic number.

It is an amenable number.

212002003181 is a deficient number, since it is larger than the sum of its proper divisors (1).

212002003181 is an equidigital number, since it uses as much as digits as its factorization.

212002003181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 212002003181 its reverse (181300200212), we get a palindrome (393302203393).

The spelling of 212002003181 in words is "two hundred twelve billion, two million, three thousand, one hundred eighty-one".