131244212421 has 12 divisors (see below), whose sum is σ = 216657112672. Its totient is φ = 74996692776.

The previous prime is 131244212399. The next prime is 131244212423. The reversal of 131244212421 is 124212442131.

131244212421 is a `hidden beast` number, since 1 + 3 + 1 + 24 + 4 + 212 + 421 = 666.

It is not a de Polignac number, because 131244212421 - 2⁶ = 131244212357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131244212423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1041620671 + ... + 1041620796.

Almost surely, 2^131244212421 is an apocalyptic number.

It is an amenable number.

131244212421 is a deficient number, since it is larger than the sum of its proper divisors (85412900251).

131244212421 is a wasteful number, since it uses less digits than its factorization.

131244212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083241480 (or 2083241477 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 131244212421 its reverse (124212442131), we get a palindrome (255456654552).

The spelling of 131244212421 in words is "one hundred thirty-one billion, two hundred forty-four million, two hundred twelve thousand, four hundred twenty-one".