1003241421221 has 16 divisors (see below), whose sum is σ = 1163755729920. Its totient is φ = 857230767360.

The previous prime is 1003241421187. The next prime is 1003241421227. The reversal of 1003241421221 is 1221241423001.

It is a cyclic number.

It is not a de Polignac number, because 1003241421221 - 2³⁰ = 1002167679397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003241421227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54108836 + ... + 54127373.

It is an arithmetic number, because the mean of its divisors is an integer number (72734733120).

Almost surely, 2^{1003241421221} is an apocalyptic number.

It is an amenable number.

1003241421221 is a deficient number, since it is larger than the sum of its proper divisors (160514308699).

1003241421221 is a wasteful number, since it uses less digits than its factorization.

1003241421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108236276.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1003241421221 its reverse (1221241423001), we get a palindrome (2224482844222).

The spelling of 1003241421221 in words is "one trillion, three billion, two hundred forty-one million, four hundred twenty-one thousand, two hundred twenty-one".