201023011144 has 16 divisors (see below), whose sum is σ = 376942003200. Its totient is φ = 100505143632.

The previous prime is 201023011117. The next prime is 201023011157. The reversal of 201023011144 is 441110320102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659592 + ... + 914935.

It is an arithmetic number, because the mean of its divisors is an integer number (23558875200).

Almost surely, 2^201023011144 is an apocalyptic number.

It is an amenable number.

201023011144 is a deficient number, since it is larger than the sum of its proper divisors (175918992056).

201023011144 is a wasteful number, since it uses less digits than its factorization.

201023011144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590492 (or 1590488 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201023011144 its reverse (441110320102), we get a palindrome (642133331246).

The spelling of 201023011144 in words is "two hundred one billion, twenty-three million, eleven thousand, one hundred forty-four".