221534452024453 has 12 divisors (see below), whose sum is σ = 236218218893580. Its totient is φ = 207711086835456.

The previous prime is 221534452024447. The next prime is 221534452024507. The reversal of 221534452024453 is 354420254435122.

It can be written as a sum of positive squares in 2 ways, for example, as 126225741810529 + 95308710213924 = 11235023^2 + 9762618^2 .

It is not a de Polignac number, because 221534452024453 - 2⁴¹ = 219335428768901 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 (221534452024153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3163206438 + ... + 3163276471.

It is an arithmetic number, because the mean of its divisors is an integer number (19684851574465).

Almost surely, 2^{221534452024453} is an apocalyptic number.

It is an amenable number.

221534452024453 is a deficient number, since it is larger than the sum of its proper divisors (14683766869127).

221534452024453 is an equidigital number, since it uses as much as digits as its factorization.

221534452024453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326483044 (or 6326483025 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 46.

The spelling of 221534452024453 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-two million, twenty-four thousand, four hundred fifty-three".