131221100210223 has 8 divisors (see below), whose sum is σ = 179030338271488. Its totient is φ = 85446297811224.

The previous prime is 131221100210201. The next prime is 131221100210281. The reversal of 131221100210223 is 322012001122131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131221100210223 - 2⁹ = 131221100209711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131221100210223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131221100210323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508608915415 + ... + 508608915672.

It is an arithmetic number, because the mean of its divisors is an integer number (22378792283936).

Almost surely, 2^{131221100210223} is an apocalyptic number.

131221100210223 is a deficient number, since it is larger than the sum of its proper divisors (47809238061265).

131221100210223 is a wasteful number, since it uses less digits than its factorization.

131221100210223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017217831133.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 131221100210223 its reverse (322012001122131), we get a palindrome (453233101332354).

The spelling of 131221100210223 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, one hundred million, two hundred ten thousand, two hundred twenty-three".