201221196 has 24 divisors (see below), whose sum is σ = 512199744. Its totient is φ = 60976080.

The previous prime is 201221183. The next prime is 201221203. The reversal of 201221196 is 691122102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762070 + ... + 762333.

It is an arithmetic number, because the mean of its divisors is an integer number (21341656).

Almost surely, 2^201221196 is an apocalyptic number.

It is an amenable number.

201221196 is an abundant number, since it is smaller than the sum of its proper divisors (310978548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201221196 is a wasteful number, since it uses less digits than its factorization.

201221196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524421 (or 1524419 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 201221196 is about 14185.2457151789. The cubic root of 201221196 is about 585.9913995018.

Adding to 201221196 its reverse (691122102), we get a palindrome (892343298).

The spelling of 201221196 in words is "two hundred one million, two hundred twenty-one thousand, one hundred ninety-six".