131000220011 has 4 divisors (see below), whose sum is σ = 131447320032. Its totient is φ = 130553119992.

The previous prime is 131000219993. The next prime is 131000220017. The reversal of 131000220011 is 110022000131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110022000131 = 27739 ⋅3966329.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131000220011 is a prime.

It is a super-2 number, since 2×131000220011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131000219974 and 131000220001.

It is not an unprimeable number, because it can be changed into a prime (131000220017) 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, 223549571 + ... + 223550156.

It is an arithmetic number, because the mean of its divisors is an integer number (32861830008).

Almost surely, 2^131000220011 is an apocalyptic number.

131000220011 is a deficient number, since it is larger than the sum of its proper divisors (447100021).

131000220011 is an equidigital number, since it uses as much as digits as its factorization.

131000220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447100020.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 131000220011 its reverse (110022000131), we get a palindrome (241022220142).

The spelling of 131000220011 in words is "one hundred thirty-one billion, two hundred twenty thousand, eleven".