20111120023142 has 16 divisors (see below), whose sum is σ = 31755372518400. Its totient is φ = 9526028266440.

The previous prime is 20111120023069. The next prime is 20111120023157. The reversal of 20111120023142 is 24132002111102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6844334 + ... + 9330977.

It is an arithmetic number, because the mean of its divisors is an integer number (1984710782400).

Almost surely, 2^{20111120023142} is an apocalyptic number.

20111120023142 is a deficient number, since it is larger than the sum of its proper divisors (11644252495258).

20111120023142 is a wasteful number, since it uses less digits than its factorization.

20111120023142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16208051.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20111120023142 its reverse (24132002111102), we get a palindrome (44243122134244).

The spelling of 20111120023142 in words is "twenty trillion, one hundred eleven billion, one hundred twenty million, twenty-three thousand, one hundred forty-two".