221464254513 has 16 divisors (see below), whose sum is σ = 326249133696. Its totient is φ = 132916312320.

The previous prime is 221464254509. The next prime is 221464254617. The reversal of 221464254513 is 315452464122.

It is not a de Polignac number, because 221464254513 - 2² = 221464254509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221464254013) 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, 94399618 + ... + 94401963.

It is an arithmetic number, because the mean of its divisors is an integer number (20390570856).

Almost surely, 2^221464254513 is an apocalyptic number.

221464254513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221464254513 is a deficient number, since it is larger than the sum of its proper divisors (104784879183).

221464254513 is a wasteful number, since it uses less digits than its factorization.

221464254513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188801624.

The product of its digits is 230400, while the sum is 39.

The spelling of 221464254513 in words is "two hundred twenty-one billion, four hundred sixty-four million, two hundred fifty-four thousand, five hundred thirteen".