73221213733 has 8 divisors (see below), whose sum is σ = 73547218080. Its totient is φ = 72895482000.

The previous prime is 73221213727. The next prime is 73221213761. The reversal of 73221213733 is 33731212237.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73221213733 is a prime.

It is a super-2 number, since 2×73221213733² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73221214733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479991 + ... + 613867.

It is an arithmetic number, because the mean of its divisors is an integer number (9193402260).

Almost surely, 2^73221213733 is an apocalyptic number.

It is an amenable number.

73221213733 is a deficient number, since it is larger than the sum of its proper divisors (326004347).

73221213733 is a wasteful number, since it uses less digits than its factorization.

73221213733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136307.

The product of its digits is 31752, while the sum is 34.

The spelling of 73221213733 in words is "seventy-three billion, two hundred twenty-one million, two hundred thirteen thousand, seven hundred thirty-three".