201216939 has 32 divisors (see below), whose sum is σ = 345292800. Its totient is φ = 101152800.

The previous prime is 201216937. The next prime is 201216941. The reversal of 201216939 is 939612102.

It is an interprime number because it is at equal distance from previous prime (201216937) and next prime (201216941).

It is not a de Polignac number, because 201216939 - 2¹ = 201216937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (201216931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6889 + ... + 21210.

It is an arithmetic number, because the mean of its divisors is an integer number (10790400).

Almost surely, 2^201216939 is an apocalyptic number.

201216939 is a deficient number, since it is larger than the sum of its proper divisors (144075861).

201216939 is a wasteful number, since it uses less digits than its factorization.

201216939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28151.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 201216939 is about 14185.0956641117. The cubic root of 201216939 is about 585.9872670959.

The spelling of 201216939 in words is "two hundred one million, two hundred sixteen thousand, nine hundred thirty-nine".