221305054052454 has 16 divisors (see below), whose sum is σ = 442626696144192. Its totient is φ = 73765586677608.

The previous prime is 221305054052449. The next prime is 221305054052477. The reversal of 221305054052454 is 454250450503122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690994864 + ... + 691315059.

It is an arithmetic number, because the mean of its divisors is an integer number (27664168509012).

Almost surely, 2^{221305054052454} is an apocalyptic number.

221305054052454 is an abundant number, since it is smaller than the sum of its proper divisors (221321642091738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221305054052454 is a wasteful number, since it uses less digits than its factorization.

221305054052454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382336611.

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 221305054052454 in words is "two hundred twenty-one trillion, three hundred five billion, fifty-four million, fifty-two thousand, four hundred fifty-four".