73021020212 has 12 divisors (see below), whose sum is σ = 146042040480. Its totient is φ = 31294722936.

The previous prime is 73021020209. The next prime is 73021020217. The reversal of 73021020212 is 21202012037.

73021020212 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73021020217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303946762 + ... + 1303946817.

It is an arithmetic number, because the mean of its divisors is an integer number (12170170040).

Almost surely, 2^73021020212 is an apocalyptic number.

It is an amenable number.

73021020212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73021020212 is a wasteful number, since it uses less digits than its factorization.

73021020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607893590 (or 2607893588 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 73021020212 its reverse (21202012037), we get a palindrome (94223032249).

The spelling of 73021020212 in words is "seventy-three billion, twenty-one million, twenty thousand, two hundred twelve".