201201421016 has 16 divisors (see below), whose sum is σ = 377622173040. Its totient is φ = 100502174880.

The previous prime is 201201421009. The next prime is 201201421021. The reversal of 201201421016 is 610124102102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12308276 + ... + 12324611.

It is an arithmetic number, because the mean of its divisors is an integer number (23601385815).

Almost surely, 2^201201421016 is an apocalyptic number.

It is an amenable number.

201201421016 is a deficient number, since it is larger than the sum of its proper divisors (176420752024).

201201421016 is a wasteful number, since it uses less digits than its factorization.

201201421016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24633914 (or 24633910 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 201201421016 its reverse (610124102102), we get a palindrome (811325523118).

The spelling of 201201421016 in words is "two hundred one billion, two hundred one million, four hundred twenty-one thousand, sixteen".