241221401555120 has 160 divisors (see below), whose sum is σ = 644667933611520. Its totient is φ = 82226184652800.

The previous prime is 241221401555119. The next prime is 241221401555131. The reversal of 241221401555120 is 21555104122142.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 512291795 + ... + 512762445.

It is an arithmetic number, because the mean of its divisors is an integer number (4029174585072).

Almost surely, 2^{241221401555120} is an apocalyptic number.

241221401555120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 241221401555120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322333966805760).

241221401555120 is an abundant number, since it is smaller than the sum of its proper divisors (403446532056400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

241221401555120 is a wasteful number, since it uses less digits than its factorization.

241221401555120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475963 (or 475957 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

Adding to 241221401555120 its reverse (21555104122142), we get a palindrome (262776505677262).

The spelling of 241221401555120 in words is "two hundred forty-one trillion, two hundred twenty-one billion, four hundred one million, five hundred fifty-five thousand, one hundred twenty".