131220111230 has 32 divisors (see below), whose sum is σ = 254383222464. Its totient is φ = 48447058176.

The previous prime is 131220111227. The next prime is 131220111233. The reversal of 131220111230 is 32111022131.

It is an interprime number because it is at equal distance from previous prime (131220111227) and next prime (131220111233).

It is a super-2 number, since 2×131220111230² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131220111199 and 131220111208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131220111233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2470634 + ... + 2523186.

It is an arithmetic number, because the mean of its divisors is an integer number (7949475702).

Almost surely, 2^131220111230 is an apocalyptic number.

131220111230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131220111230 is a deficient number, since it is larger than the sum of its proper divisors (123163111234).

131220111230 is a wasteful number, since it uses less digits than its factorization.

131220111230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71780.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 131220111230 its reverse (32111022131), we get a palindrome (163331133361).

The spelling of 131220111230 in words is "one hundred thirty-one billion, two hundred twenty million, one hundred eleven thousand, two hundred thirty".