201101221002001 has 32 divisors (see below), whose sum is σ = 224809476192000. Its totient is φ = 178772764649472.

The previous prime is 201101221001983. The next prime is 201101221002013. The reversal of 201101221002001 is 100200122101102.

It is not a de Polignac number, because 201101221002001 - 2⁹ = 201101221001489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201101221002601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 555137005 + ... + 555499141.

It is an arithmetic number, because the mean of its divisors is an integer number (7025296131000).

Almost surely, 2^{201101221002001} is an apocalyptic number.

It is an amenable number.

201101221002001 is a deficient number, since it is larger than the sum of its proper divisors (23708255189999).

201101221002001 is a wasteful number, since it uses less digits than its factorization.

201101221002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367321.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201101221002001 its reverse (100200122101102), we get a palindrome (301301343103103).

The spelling of 201101221002001 in words is "two hundred one trillion, one hundred one billion, two hundred twenty-one million, two thousand, one".