16202221001 has 4 divisors (see below), whose sum is σ = 16205839632. Its totient is φ = 16198602372.

The previous prime is 16202220997. The next prime is 16202221037. The reversal of 16202221001 is 10012220261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16202221001 - 2² = 16202220997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16202221081) 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, 1802591 + ... + 1811556.

It is an arithmetic number, because the mean of its divisors is an integer number (4051459908).

Almost surely, 2^16202221001 is an apocalyptic number.

It is an amenable number.

16202221001 is a deficient number, since it is larger than the sum of its proper divisors (3618631).

16202221001 is an equidigital number, since it uses as much as digits as its factorization.

16202221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618630.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 16202221001 its reverse (10012220261), we get a palindrome (26214441262).

The spelling of 16202221001 in words is "sixteen billion, two hundred two million, two hundred twenty-one thousand, one".