216222701 has 16 divisors (see below), whose sum is σ = 232243200. Its totient is φ = 200825328.

The previous prime is 216222697. The next prime is 216222703. The reversal of 216222701 is 107222612.

It is a happy number.

It is not a de Polignac number, because 216222701 - 2² = 216222697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216222703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149540 + ... + 150978.

It is an arithmetic number, because the mean of its divisors is an integer number (14515200).

Almost surely, 2^216222701 is an apocalyptic number.

It is an amenable number.

216222701 is a deficient number, since it is larger than the sum of its proper divisors (16020499).

216222701 is a wasteful number, since it uses less digits than its factorization.

216222701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 216222701 is about 14704.5129467113. The cubic root of 216222701 is about 600.2061338029.

The spelling of 216222701 in words is "two hundred sixteen million, two hundred twenty-two thousand, seven hundred one".