131211221200401 has 8 divisors (see below), whose sum is σ = 174948480411840. Its totient is φ = 87474054727952.

The previous prime is 131211221200387. The next prime is 131211221200427. The reversal of 131211221200401 is 104002122112131.

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

It is a cyclic number.

It is not a de Polignac number, because 131211221200401 - 2¹¹ = 131211221198353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131211221207401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19813410 + ... + 25592843.

It is an arithmetic number, because the mean of its divisors is an integer number (21868560051480).

Almost surely, 2^{131211221200401} is an apocalyptic number.

It is an amenable number.

131211221200401 is a deficient number, since it is larger than the sum of its proper divisors (43737259211439).

131211221200401 is an equidigital number, since it uses as much as digits as its factorization.

131211221200401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46369495.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 131211221200401 its reverse (104002122112131), we get a palindrome (235213343312532).

The spelling of 131211221200401 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred twenty-one million, two hundred thousand, four hundred one".