212008529081 has 2 divisors, whose sum is σ = 212008529082. Its totient is φ = 212008529080.

The previous prime is 212008529069. The next prime is 212008529111. The reversal of 212008529081 is 180925800212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207647907856 + 4360621225 = 455684^2 + 66035^2 .

It is a cyclic number.

It is not a de Polignac number, because 212008529081 - 2¹⁰ = 212008528057 is a prime.

It is a super-2 number, since 2×212008529081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212008520081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106004264540 + 106004264541.

It is an arithmetic number, because the mean of its divisors is an integer number (106004264541).

Almost surely, 2^212008529081 is an apocalyptic number.

It is an amenable number.

212008529081 is a deficient number, since it is larger than the sum of its proper divisors (1).

212008529081 is an equidigital number, since it uses as much as digits as its factorization.

212008529081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 212008529081 in words is "two hundred twelve billion, eight million, five hundred twenty-nine thousand, eighty-one".