131424001221 has 8 divisors (see below), whose sum is σ = 179968001824. Its totient is φ = 85248000720.

The previous prime is 131424001213. The next prime is 131424001229. The reversal of 131424001221 is 122100424131.

It is an interprime number because it is at equal distance from previous prime (131424001213) and next prime (131424001229).

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

It is not a de Polignac number, because 131424001221 - 2³ = 131424001213 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 (131424001229) 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, 591999895 + ... + 592000116.

It is an arithmetic number, because the mean of its divisors is an integer number (22496000228).

Almost surely, 2^131424001221 is an apocalyptic number.

It is an amenable number.

131424001221 is a deficient number, since it is larger than the sum of its proper divisors (48544000603).

131424001221 is a wasteful number, since it uses less digits than its factorization.

131424001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184000051.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 131424001221 its reverse (122100424131), we get a palindrome (253524425352).

The spelling of 131424001221 in words is "one hundred thirty-one billion, four hundred twenty-four million, one thousand, two hundred twenty-one".