11421434001221 has 8 divisors (see below), whose sum is σ = 11428577371680. Its totient is φ = 11414290993488.

The previous prime is 11421434001209. The next prime is 11421434001259. The reversal of 11421434001221 is 12210043412411.

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 11421434001221 - 2¹⁴ = 11421433984837 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 (11421434001281) 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, 91377050 + ... + 91501956.

It is an arithmetic number, because the mean of its divisors is an integer number (1428572171460).

Almost surely, 2^{11421434001221} is an apocalyptic number.

It is an amenable number.

11421434001221 is a deficient number, since it is larger than the sum of its proper divisors (7143370459).

11421434001221 is a wasteful number, since it uses less digits than its factorization.

11421434001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181363.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 11421434001221 its reverse (12210043412411), we get a palindrome (23631477413632).

The spelling of 11421434001221 in words is "eleven trillion, four hundred twenty-one billion, four hundred thirty-four million, one thousand, two hundred twenty-one".