221534462021443 has 8 divisors (see below), whose sum is σ = 222990613610688. Its totient is φ = 220078881369984.

The previous prime is 221534462021399. The next prime is 221534462021449. The reversal of 221534462021443 is 344120264435122.

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 221534462021443 - 2³³ = 221525872086851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221534462021443.

It is not an unprimeable number, because it can be changed into a prime (221534462021449) 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, 141955846 + ... + 143507947.

It is an arithmetic number, because the mean of its divisors is an integer number (27873826701336).

Almost surely, 2^{221534462021443} is an apocalyptic number.

221534462021443 is a deficient number, since it is larger than the sum of its proper divisors (1456151589245).

221534462021443 is a wasteful number, since it uses less digits than its factorization.

221534462021443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285468893.

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 221534462021443 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred sixty-two million, twenty-one thousand, four hundred forty-three".