73210021201 has 4 divisors (see below), whose sum is σ = 73210688100. Its totient is φ = 73209354304.

The previous prime is 73210021147. The next prime is 73210021211. The reversal of 73210021201 is 10212001237.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 63277905601 + 9932115600 = 251551^2 + 99660^2 .

It is a cyclic number.

It is not a de Polignac number, because 73210021201 - 2³⁵ = 38850282833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73210021211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125596 + ... + 402733.

It is an arithmetic number, because the mean of its divisors is an integer number (18302672025).

Almost surely, 2^73210021201 is an apocalyptic number.

It is an amenable number.

73210021201 is a deficient number, since it is larger than the sum of its proper divisors (666899).

73210021201 is a wasteful number, since it uses less digits than its factorization.

73210021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666898.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 73210021201 its reverse (10212001237), we get a palindrome (83422022438).

The spelling of 73210021201 in words is "seventy-three billion, two hundred ten million, twenty-one thousand, two hundred one".