221053444511 has 8 divisors (see below), whose sum is σ = 222634216560. Its totient is φ = 219474859968.

The previous prime is 221053444483. The next prime is 221053444517. The reversal of 221053444511 is 115444350122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221053444511 - 2³⁴ = 203873575327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221053444517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343781 + ... + 748526.

It is an arithmetic number, because the mean of its divisors is an integer number (27829277070).

Almost surely, 2^221053444511 is an apocalyptic number.

221053444511 is a deficient number, since it is larger than the sum of its proper divisors (1580772049).

221053444511 is a wasteful number, since it uses less digits than its factorization.

221053444511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093753.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 221053444511 its reverse (115444350122), we get a palindrome (336497794633).

The spelling of 221053444511 in words is "two hundred twenty-one billion, fifty-three million, four hundred forty-four thousand, five hundred eleven".