201121075682 has 16 divisors (see below), whose sum is σ = 302108510592. Its totient is φ = 100418285520.

The previous prime is 201121075621. The next prime is 201121075811. The reversal of 201121075682 is 286570121102.

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 7 ways as a sum of consecutive naturals, for example, 15456023 + ... + 15469029.

It is an arithmetic number, because the mean of its divisors is an integer number (18881781912).

Almost surely, 2^201121075682 is an apocalyptic number.

201121075682 is a deficient number, since it is larger than the sum of its proper divisors (100987434910).

201121075682 is a wasteful number, since it uses less digits than its factorization.

201121075682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23353.

The product of its (nonzero) digits is 13440, while the sum is 35.

Adding to 201121075682 its reverse (286570121102), we get a palindrome (487691196784).

The spelling of 201121075682 in words is "two hundred one billion, one hundred twenty-one million, seventy-five thousand, six hundred eighty-two".