201100000401 has 16 divisors (see below), whose sum is σ = 297985019200. Its totient is φ = 134040075264.

The previous prime is 201100000369. The next prime is 201100000403. The reversal of 201100000401 is 104000001102.

It is a happy number.

It is not a de Polignac number, because 201100000401 - 2⁵ = 201100000369 is a prime.

It is a super-2 number, since 2×201100000401² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201100000403) 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, 599536 + ... + 872721.

It is an arithmetic number, because the mean of its divisors is an integer number (18624063700).

Almost surely, 2^201100000401 is an apocalyptic number.

It is an amenable number.

201100000401 is a deficient number, since it is larger than the sum of its proper divisors (96885018799).

201100000401 is a wasteful number, since it uses less digits than its factorization.

201100000401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477325 (or 1477319 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201100000401 its reverse (104000001102), we get a palindrome (305100001503).

The spelling of 201100000401 in words is "two hundred one billion, one hundred million, four hundred one", and thus it is an aban number.