16221243351 has 8 divisors (see below), whose sum is σ = 22374128880. Its totient is φ = 10441260032.

The previous prime is 16221243347. The next prime is 16221243383. The reversal of 16221243351 is 15334212261.

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

It is a cyclic number.

It is not a de Polignac number, because 16221243351 - 2² = 16221243347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221242351) 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, 93225450 + ... + 93225623.

It is an arithmetic number, because the mean of its divisors is an integer number (2796766110).

Almost surely, 2^16221243351 is an apocalyptic number.

16221243351 is a deficient number, since it is larger than the sum of its proper divisors (6152885529).

16221243351 is a wasteful number, since it uses less digits than its factorization.

16221243351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186451105.

The product of its digits is 8640, while the sum is 30.

The spelling of 16221243351 in words is "sixteen billion, two hundred twenty-one million, two hundred forty-three thousand, three hundred fifty-one".