212021013073 has 2 divisors, whose sum is σ = 212021013074. Its totient is φ = 212021013072.

The previous prime is 212021013067. The next prime is 212021013079. The reversal of 212021013073 is 370310120212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (212021013067) and next prime (212021013079).

It can be written as a sum of positive squares in only one way, i.e., 175805781264 + 36215231809 = 419292^2 + 190303^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021013073 - 2²⁹ = 211484142161 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021013079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010506536 + 106010506537.

It is an arithmetic number, because the mean of its divisors is an integer number (106010506537).

Almost surely, 2^212021013073 is an apocalyptic number.

It is an amenable number.

212021013073 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021013073 is an equidigital number, since it uses as much as digits as its factorization.

212021013073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 212021013073 its reverse (370310120212), we get a palindrome (582331133285).

The spelling of 212021013073 in words is "two hundred twelve billion, twenty-one million, thirteen thousand, seventy-three".