201019401 has 20 divisors (see below), whose sum is σ = 327588624. Its totient is φ = 121829400.

The previous prime is 201019397. The next prime is 201019421. The reversal of 201019401 is 104910102.

201019401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201019401 - 2² = 201019397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201019421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 111915 + ... + 113696.

Almost surely, 2^201019401 is an apocalyptic number.

It is an amenable number.

201019401 is a deficient number, since it is larger than the sum of its proper divisors (126569223).

201019401 is a wasteful number, since it uses less digits than its factorization.

201019401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225634 (or 225625 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 201019401 is about 14178.1310827626. The cubic root of 201019401 is about 585.7954465108.

Adding to 201019401 its reverse (104910102), we get a palindrome (305929503).

The spelling of 201019401 in words is "two hundred one million, nineteen thousand, four hundred one".