131120021111 has 4 divisors (see below), whose sum is σ = 131741443224. Its totient is φ = 130498599000.

The previous prime is 131120021093. The next prime is 131120021119. The reversal of 131120021111 is 111120021131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131120021111 - 2⁶ = 131120021047 is a prime.

It is a super-3 number, since 3×131120021111³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131120021119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310710740 + ... + 310711161.

It is an arithmetic number, because the mean of its divisors is an integer number (32935360806).

Almost surely, 2^131120021111 is an apocalyptic number.

131120021111 is a deficient number, since it is larger than the sum of its proper divisors (621422113).

131120021111 is an equidigital number, since it uses as much as digits as its factorization.

131120021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621422112.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 131120021111 its reverse (111120021131), we get a palindrome (242240042242).

The spelling of 131120021111 in words is "one hundred thirty-one billion, one hundred twenty million, twenty-one thousand, one hundred eleven".