221434012113465 has 16 divisors (see below), whose sum is σ = 354294782045568. Its totient is φ = 118098018905856.

The previous prime is 221434012113427. The next prime is 221434012113493. The reversal of 221434012113465 is 564311210434122.

It is not a de Polignac number, because 221434012113465 - 2¹⁰ = 221434012112441 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8717377 + ... + 22778513.

It is an arithmetic number, because the mean of its divisors is an integer number (22143423877848).

Almost surely, 2^{221434012113465} is an apocalyptic number.

It is an amenable number.

221434012113465 is a deficient number, since it is larger than the sum of its proper divisors (132860769932103).

221434012113465 is a wasteful number, since it uses less digits than its factorization.

221434012113465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15111008.

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 221434012113465 its reverse (564311210434122), we get a palindrome (785745222547587).

The spelling of 221434012113465 in words is "two hundred twenty-one trillion, four hundred thirty-four billion, twelve million, one hundred thirteen thousand, four hundred sixty-five".