73221010 has 16 divisors (see below), whose sum is σ = 131927616. Its totient is φ = 29259568.

The previous prime is 73220999. The next prime is 73221047. The reversal of 73221010 is 1012237.

It is a happy number.

It is a super-2 number, since 2×73221010² = 10722632610840200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9237 + ... + 15223.

It is an arithmetic number, because the mean of its divisors is an integer number (8245476).

Almost surely, 2^73221010 is an apocalyptic number.

73221010 is a deficient number, since it is larger than the sum of its proper divisors (58706606).

73221010 is a wasteful number, since it uses less digits than its factorization.

73221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 73221010 is about 8556.9276028257. The cubic root of 73221010 is about 418.3552644633.

Adding to 73221010 its reverse (1012237), we get a palindrome (74233247).

The spelling of 73221010 in words is "seventy-three million, two hundred twenty-one thousand, ten".