221947799033 has 4 divisors (see below), whose sum is σ = 233629262160. Its totient is φ = 210266335908.

The previous prime is 221947799009. The next prime is 221947799053. The reversal of 221947799033 is 330997749122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221947799033 - 2²⁴ = 221931021817 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 221947799033.

It is not an unprimeable number, because it can be changed into a prime (221947799053) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5840731535 + ... + 5840731572.

It is an arithmetic number, because the mean of its divisors is an integer number (58407315540).

Almost surely, 2^221947799033 is an apocalyptic number.

It is an amenable number.

221947799033 is a deficient number, since it is larger than the sum of its proper divisors (11681463127).

221947799033 is a wasteful number, since it uses less digits than its factorization.

221947799033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11681463126.

The product of its (nonzero) digits is 5143824, while the sum is 56.

The spelling of 221947799033 in words is "two hundred twenty-one billion, nine hundred forty-seven million, seven hundred ninety-nine thousand, thirty-three".