16652007221 has 8 divisors (see below), whose sum is σ = 16765470720. Its totient is φ = 16538741872.

The previous prime is 16652007193. The next prime is 16652007233. The reversal of 16652007221 is 12270025661.

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

It is not a de Polignac number, because 16652007221 - 2⁶ = 16652007157 is a prime.

It is a super-2 number, since 2×16652007221² (a number of 21 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 (16652007241) 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, 121100 + ... + 219018.

It is an arithmetic number, because the mean of its divisors is an integer number (2095683840).

Almost surely, 2^16652007221 is an apocalyptic number.

It is an amenable number.

16652007221 is a deficient number, since it is larger than the sum of its proper divisors (113463499).

16652007221 is an equidigital number, since it uses as much as digits as its factorization.

16652007221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99075.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 16652007221 in words is "sixteen billion, six hundred fifty-two million, seven thousand, two hundred twenty-one".