241221511152551 has 8 divisors (see below), whose sum is σ = 254362069104000. Its totient is φ = 228125422095480.

The previous prime is 241221511152521. The next prime is 241221511152649. The reversal of 241221511152551 is 155251115122142.

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

It is not a de Polignac number, because 241221511152551 - 2¹⁸ = 241221510890407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241221511152521) 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, 11117212451 + ... + 11117234148.

It is an arithmetic number, because the mean of its divisors is an integer number (31795258638000).

Almost surely, 2^{241221511152551} is an apocalyptic number.

241221511152551 is a deficient number, since it is larger than the sum of its proper divisors (13140557951449).

241221511152551 is a wasteful number, since it uses less digits than its factorization.

241221511152551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22234447189.

The product of its digits is 40000, while the sum is 38.

Adding to 241221511152551 its reverse (155251115122142), we get a palindrome (396472626274693).

The spelling of 241221511152551 in words is "two hundred forty-one trillion, two hundred twenty-one billion, five hundred eleven million, one hundred fifty-two thousand, five hundred fifty-one".