241221511231421 has 8 divisors (see below), whose sum is σ = 275687068857984. Its totient is φ = 206757289038960.

The previous prime is 241221511231397. The next prime is 241221511231427. The reversal of 241221511231421 is 124132115122142.

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 241221511231421 - 2²⁶ = 241221444122557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241221511231427) 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, 333471425 + ... + 334194006.

It is an arithmetic number, because the mean of its divisors is an integer number (34460883607248).

Almost surely, 2^{241221511231421} is an apocalyptic number.

It is an amenable number.

241221511231421 is a deficient number, since it is larger than the sum of its proper divisors (34465557626563).

241221511231421 is an equidigital number, since it uses as much as digits as its factorization.

241221511231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667717051.

The product of its digits is 7680, while the sum is 32.

Adding to 241221511231421 its reverse (124132115122142), we get a palindrome (365353626353563).

The spelling of 241221511231421 in words is "two hundred forty-one trillion, two hundred twenty-one billion, five hundred eleven million, two hundred thirty-one thousand, four hundred twenty-one".