454402531221 has 16 divisors (see below), whose sum is σ = 614465728128. Its totient is φ = 298638043200.

The previous prime is 454402531217. The next prime is 454402531259. The reversal of 454402531221 is 122135204454.

It is not a de Polignac number, because 454402531221 - 2² = 454402531217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454402530221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2103051 + ... + 2309031.

It is an arithmetic number, because the mean of its divisors is an integer number (38404108008).

Almost surely, 2^454402531221 is an apocalyptic number.

It is an amenable number.

454402531221 is a deficient number, since it is larger than the sum of its proper divisors (160063196907).

454402531221 is a wasteful number, since it uses less digits than its factorization.

454402531221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216412.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 454402531221 its reverse (122135204454), we get a palindrome (576537735675).

The spelling of 454402531221 in words is "four hundred fifty-four billion, four hundred two million, five hundred thirty-one thousand, two hundred twenty-one".