131224121401 has 4 divisors (see below), whose sum is σ = 134016124032. Its totient is φ = 128432118772.

The previous prime is 131224121393. The next prime is 131224121419. The reversal of 131224121401 is 104121422131.

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 a cyclic number.

It is not a de Polignac number, because 131224121401 - 2³ = 131224121393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131224122401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396001245 + ... + 1396001338.

It is an arithmetic number, because the mean of its divisors is an integer number (33504031008).

Almost surely, 2^131224121401 is an apocalyptic number.

It is an amenable number.

131224121401 is a deficient number, since it is larger than the sum of its proper divisors (2792002631).

131224121401 is an equidigital number, since it uses as much as digits as its factorization.

131224121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792002630.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 131224121401 its reverse (104121422131), we get a palindrome (235345543532).

The spelling of 131224121401 in words is "one hundred thirty-one billion, two hundred twenty-four million, one hundred twenty-one thousand, four hundred one".