221002130454 has 32 divisors (see below), whose sum is σ = 514678821120. Its totient is φ = 61952079072.

The previous prime is 221002130449. The next prime is 221002130467. The reversal of 221002130454 is 454031200122.

It is a super-2 number, since 2×221002130454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49638864 + ... + 49643315.

It is an arithmetic number, because the mean of its divisors is an integer number (16083713160).

Almost surely, 2^221002130454 is an apocalyptic number.

221002130454 is an abundant number, since it is smaller than the sum of its proper divisors (293676690666).

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

221002130454 is a wasteful number, since it uses less digits than its factorization.

221002130454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99282244.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 221002130454 its reverse (454031200122), we get a palindrome (675033330576).

The spelling of 221002130454 in words is "two hundred twenty-one billion, two million, one hundred thirty thousand, four hundred fifty-four".