221652563045 has 4 divisors (see below), whose sum is σ = 265983075660. Its totient is φ = 177322050432.

The previous prime is 221652563029. The next prime is 221652563051. The reversal of 221652563045 is 540365256122.

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 147861013729 + 73791549316 = 384527^2 + 271646^2 .

It is a cyclic number.

It is not a de Polignac number, because 221652563045 - 2⁴ = 221652563029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221652562993 and 221652563011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22165256300 + ... + 22165256309.

It is an arithmetic number, because the mean of its divisors is an integer number (66495768915).

Almost surely, 2^221652563045 is an apocalyptic number.

It is an amenable number.

221652563045 is a deficient number, since it is larger than the sum of its proper divisors (44330512615).

221652563045 is an equidigital number, since it uses as much as digits as its factorization.

221652563045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44330512614.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 221652563045 in words is "two hundred twenty-one billion, six hundred fifty-two million, five hundred sixty-three thousand, forty-five".