241221401555131 has 2 divisors, whose sum is σ = 241221401555132. Its totient is φ = 241221401555130.

The previous prime is 241221401555119. The next prime is 241221401555153. The reversal of 241221401555131 is 131555104122142.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 241221401555131 - 2⁹ = 241221401554619 is a prime.

It is a super-2 number, since 2×241221401555131² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (241221401555171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120610700777565 + 120610700777566.

It is an arithmetic number, because the mean of its divisors is an integer number (120610700777566).

Almost surely, 2^{241221401555131} is an apocalyptic number.

241221401555131 is a deficient number, since it is larger than the sum of its proper divisors (1).

241221401555131 is an equidigital number, since it uses as much as digits as its factorization.

241221401555131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 37.

Adding to 241221401555131 its reverse (131555104122142), we get a palindrome (372776505677273).

The spelling of 241221401555131 in words is "two hundred forty-one trillion, two hundred twenty-one billion, four hundred one million, five hundred fifty-five thousand, one hundred thirty-one".