281054113221 has 32 divisors (see below), whose sum is σ = 437076864000. Its totient is φ = 160578954480.

The previous prime is 281054113217. The next prime is 281054113247. The reversal of 281054113221 is 122311450182.

It is a happy number.

It is not a de Polignac number, because 281054113221 - 2² = 281054113217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281054113201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9059266 + ... + 9090236.

It is an arithmetic number, because the mean of its divisors is an integer number (13658652000).

Almost surely, 2^281054113221 is an apocalyptic number.

281054113221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

281054113221 is a deficient number, since it is larger than the sum of its proper divisors (156022750779).

281054113221 is an equidigital number, since it uses as much as digits as its factorization.

281054113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39814 (or 39800 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The spelling of 281054113221 in words is "two hundred eighty-one billion, fifty-four million, one hundred thirteen thousand, two hundred twenty-one".