201401121 has 16 divisors (see below), whose sum is σ = 289245440. Its totient is φ = 124241040.

The previous prime is 201401117. The next prime is 201401191. The reversal of 201401121 is 121104102.

It is a happy number.

It is not a de Polignac number, because 201401121 - 2² = 201401117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201401097 and 201401106.

It is not an unprimeable number, because it can be changed into a prime (201401191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38635 + ... + 43536.

It is an arithmetic number, because the mean of its divisors is an integer number (18077840).

Almost surely, 2^201401121 is an apocalyptic number.

It is an amenable number.

201401121 is a deficient number, since it is larger than the sum of its proper divisors (87844319).

201401121 is a wasteful number, since it uses less digits than its factorization.

201401121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82236.

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

The square root of 201401121 is about 14191.5862749729. The cubic root of 201401121 is about 586.1660051844.

Adding to 201401121 its reverse (121104102), we get a palindrome (322505223).

The spelling of 201401121 in words is "two hundred one million, four hundred one thousand, one hundred twenty-one".