201023011142 has 16 divisors (see below), whose sum is σ = 302350477632. Its totient is φ = 100239871680.

The previous prime is 201023011117. The next prime is 201023011157. The reversal of 201023011142 is 241110320102.

It is a super-2 number, since 2×201023011142² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201023011142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1061267 + ... + 1236257.

It is an arithmetic number, because the mean of its divisors is an integer number (18896904852).

Almost surely, 2^201023011142 is an apocalyptic number.

201023011142 is a deficient number, since it is larger than the sum of its proper divisors (101327466490).

201023011142 is a wasteful number, since it uses less digits than its factorization.

201023011142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176543.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201023011142 its reverse (241110320102), we get a palindrome (442133331244).

The spelling of 201023011142 in words is "two hundred one billion, twenty-three million, eleven thousand, one hundred forty-two".