2212221578533 has 4 divisors (see below), whose sum is σ = 2212454527020. Its totient is φ = 2211988630048.

The previous prime is 2212221578519. The next prime is 2212221578549. The reversal of 2212221578533 is 3358751222122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 312188152644 + 1900033425889 = 558738^2 + 1378417^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212221578533 - 2¹⁷ = 2212221447461 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 2212221578533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218221578533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116459998 + ... + 116478991.

It is an arithmetic number, because the mean of its divisors is an integer number (553113631755).

Almost surely, 2^{2212221578533} is an apocalyptic number.

It is an amenable number.

2212221578533 is a deficient number, since it is larger than the sum of its proper divisors (232948487).

2212221578533 is an equidigital number, since it uses as much as digits as its factorization.

2212221578533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232948486.

The product of its digits is 403200, while the sum is 43.

The spelling of 2212221578533 in words is "two trillion, two hundred twelve billion, two hundred twenty-one million, five hundred seventy-eight thousand, five hundred thirty-three".