131201421023421 has 48 divisors (see below), whose sum is σ = 221272677609984. Its totient is φ = 73351217509632.

The previous prime is 131201421023369. The next prime is 131201421023423. The reversal of 131201421023421 is 124320124102131.

131201421023421 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 0 + 1 + 4 + 210 + 23 + 421 = 666.

It is not a de Polignac number, because 131201421023421 - 2⁶ = 131201421023357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201421023423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 591081 + ... + 16209633.

It is an arithmetic number, because the mean of its divisors is an integer number (4609847450208).

Almost surely, 2^{131201421023421} is an apocalyptic number.

It is an amenable number.

131201421023421 is a deficient number, since it is larger than the sum of its proper divisors (90071256586563).

131201421023421 is a wasteful number, since it uses less digits than its factorization.

131201421023421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15621450 (or 15621447 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 131201421023421 its reverse (124320124102131), we get a palindrome (255521545125552).

The spelling of 131201421023421 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred twenty-one million, twenty-three thousand, four hundred twenty-one".