201001012101121 has 4 divisors (see below), whose sum is σ = 202332144631744. Its totient is φ = 199669879570500.

The previous prime is 201001012101089. The next prime is 201001012101133. The reversal of 201001012101121 is 121101210100102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201001012101121 - 2⁵ = 201001012101089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201001012101191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665566265085 + ... + 665566265386.

It is an arithmetic number, because the mean of its divisors is an integer number (50583036157936).

Almost surely, 2^{201001012101121} is an apocalyptic number.

It is an amenable number.

201001012101121 is a deficient number, since it is larger than the sum of its proper divisors (1331132530623).

201001012101121 is a wasteful number, since it uses less digits than its factorization.

201001012101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331132530622.

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

Adding to 201001012101121 its reverse (121101210100102), we get a palindrome (322102222201223).

The spelling of 201001012101121 in words is "two hundred one trillion, one billion, twelve million, one hundred one thousand, one hundred twenty-one".