131220210333 has 4 divisors (see below), whose sum is σ = 174960280448. Its totient is φ = 87480140220.

The previous prime is 131220210313. The next prime is 131220210347. The reversal of 131220210333 is 333012022131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131220210333 - 2⁶ = 131220210269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131220210313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21870035053 + ... + 21870035058.

It is an arithmetic number, because the mean of its divisors is an integer number (43740070112).

Almost surely, 2^131220210333 is an apocalyptic number.

It is an amenable number.

131220210333 is a deficient number, since it is larger than the sum of its proper divisors (43740070115).

131220210333 is an equidigital number, since it uses as much as digits as its factorization.

131220210333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43740070114.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 131220210333 its reverse (333012022131), we get a palindrome (464232232464).

The spelling of 131220210333 in words is "one hundred thirty-one billion, two hundred twenty million, two hundred ten thousand, three hundred thirty-three".