201121102101001 has 8 divisors (see below), whose sum is σ = 201317212704384. Its totient is φ = 200924993508960.

The previous prime is 201121102100911. The next prime is 201121102101013. The reversal of 201121102101001 is 100101201121102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 201121102101001 - 2⁴³ = 192325009078793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121102101401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270830661 + ... + 271572253.

It is an arithmetic number, because the mean of its divisors is an integer number (25164651588048).

Almost surely, 2^{201121102101001} is an apocalyptic number.

It is an amenable number.

201121102101001 is a deficient number, since it is larger than the sum of its proper divisors (196110603383).

201121102101001 is a wasteful number, since it uses less digits than its factorization.

201121102101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005671.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201121102101001 its reverse (100101201121102), we get a palindrome (301222303222103).

The spelling of 201121102101001 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred two million, one hundred one thousand, one".