131121322223 has 4 divisors (see below), whose sum is σ = 131150316648. Its totient is φ = 131092327800.

The previous prime is 131121322147. The next prime is 131121322231. The reversal of 131121322223 is 322223121131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131121322223 - 2¹⁴ = 131121305839 is a prime.

It is a super-2 number, since 2×131121322223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121321223) 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, 14490428 + ... + 14499473.

It is an arithmetic number, because the mean of its divisors is an integer number (32787579162).

Almost surely, 2^131121322223 is an apocalyptic number.

131121322223 is a deficient number, since it is larger than the sum of its proper divisors (28994425).

131121322223 is an equidigital number, since it uses as much as digits as its factorization.

131121322223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28994424.

The product of its digits is 864, while the sum is 23.

Adding to 131121322223 its reverse (322223121131), we get a palindrome (453344443354).

The spelling of 131121322223 in words is "one hundred thirty-one billion, one hundred twenty-one million, three hundred twenty-two thousand, two hundred twenty-three".