73102121 has 8 divisors (see below), whose sum is σ = 76352640. Its totient is φ = 69918768.

The previous prime is 73102111. The next prime is 73102129. The reversal of 73102121 is 12120137.

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-73102121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73102121.

It is not an unprimeable number, because it can be changed into a prime (73102129) 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, 14561 + ... + 18926.

It is an arithmetic number, because the mean of its divisors is an integer number (9544080).

Almost surely, 2^73102121 is an apocalyptic number.

It is an amenable number.

73102121 is a deficient number, since it is larger than the sum of its proper divisors (3250519).

73102121 is a wasteful number, since it uses less digits than its factorization.

73102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33583.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 73102121 is about 8549.9778362286. The cubic root of 73102121 is about 418.1287139002.

Adding to 73102121 its reverse (12120137), we get a palindrome (85222258).

The spelling of 73102121 in words is "seventy-three million, one hundred two thousand, one hundred twenty-one".