201121202001 has 8 divisors (see below), whose sum is σ = 279820802880. Its totient is φ = 128251201232.

The previous prime is 201121201993. The next prime is 201121202039. The reversal of 201121202001 is 100202121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201121202001 - 2³ = 201121201993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201121202081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1457399946 + ... + 1457400083.

It is an arithmetic number, because the mean of its divisors is an integer number (34977600360).

Almost surely, 2^201121202001 is an apocalyptic number.

It is an amenable number.

201121202001 is a deficient number, since it is larger than the sum of its proper divisors (78699600879).

201121202001 is a wasteful number, since it uses less digits than its factorization.

201121202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914800055.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201121202001 its reverse (100202121102), we get a palindrome (301323323103).

The spelling of 201121202001 in words is "two hundred one billion, one hundred twenty-one million, two hundred two thousand, one".