45531441001221 has 16 divisors (see below), whose sum is σ = 69710064496128. Its totient is φ = 25894658386800.

The previous prime is 45531441001171. The next prime is 45531441001231. The reversal of 45531441001221 is 12210014413554.

It is not a de Polignac number, because 45531441001221 - 2¹⁴ = 45531440984837 is a prime.

It is a super-2 number, since 2×45531441001221² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45531441001231) 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, 5137824615 + ... + 5137833476.

It is an arithmetic number, because the mean of its divisors is an integer number (4356879031008).

Almost surely, 2^{45531441001221} is an apocalyptic number.

It is an amenable number.

45531441001221 is a deficient number, since it is larger than the sum of its proper divisors (24178623494907).

45531441001221 is a wasteful number, since it uses less digits than its factorization.

45531441001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275658312.

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 45531441001221 its reverse (12210014413554), we get a palindrome (57741455414775).

The spelling of 45531441001221 in words is "forty-five trillion, five hundred thirty-one billion, four hundred forty-one million, one thousand, two hundred twenty-one".