131220021103 has 2 divisors, whose sum is σ = 131220021104. Its totient is φ = 131220021102.

The previous prime is 131220021089. The next prime is 131220021137. The reversal of 131220021103 is 301120022131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131220021103 - 2¹⁷ = 131219890031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131220021143) by changing a digit.

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 as a sum of consecutive naturals, namely, 65610010551 + 65610010552.

It is an arithmetic number, because the mean of its divisors is an integer number (65610010552).

Almost surely, 2^131220021103 is an apocalyptic number.

131220021103 is a deficient number, since it is larger than the sum of its proper divisors (1).

131220021103 is an equidigital number, since it uses as much as digits as its factorization.

131220021103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131220021103 its reverse (301120022131), we get a palindrome (432340043234).

The spelling of 131220021103 in words is "one hundred thirty-one billion, two hundred twenty million, twenty-one thousand, one hundred three".