201220033345 has 4 divisors (see below), whose sum is σ = 241464040020. Its totient is φ = 160976026672.

The previous prime is 201220033309. The next prime is 201220033351. The reversal of 201220033345 is 543330022102.

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 61825330609 + 139394702736 = 248647^2 + 373356^2 .

It is a cyclic number.

It is not a de Polignac number, because 201220033345 - 2¹⁵ = 201220000577 is a prime.

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, 20122003330 + ... + 20122003339.

It is an arithmetic number, because the mean of its divisors is an integer number (60366010005).

Almost surely, 2^201220033345 is an apocalyptic number.

It is an amenable number.

201220033345 is a deficient number, since it is larger than the sum of its proper divisors (40244006675).

201220033345 is an equidigital number, since it uses as much as digits as its factorization.

201220033345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40244006674.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 201220033345 its reverse (543330022102), we get a palindrome (744550055447).

The spelling of 201220033345 in words is "two hundred one billion, two hundred twenty million, thirty-three thousand, three hundred forty-five".