213320101145 has 4 divisors (see below), whose sum is σ = 255984121380. Its totient is φ = 170656080912.

The previous prime is 213320101103. The next prime is 213320101213. The reversal of 213320101145 is 541101023312.

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 64039869721 + 149280231424 = 253061^2 + 386368^2 .

It is a cyclic number.

It is not a de Polignac number, because 213320101145 - 2¹⁰ = 213320100121 is a prime.

It is a super-2 number, since 2×213320101145² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213320101145.

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, 21332010110 + ... + 21332010119.

It is an arithmetic number, because the mean of its divisors is an integer number (63996030345).

Almost surely, 2^213320101145 is an apocalyptic number.

It is an amenable number.

213320101145 is a deficient number, since it is larger than the sum of its proper divisors (42664020235).

213320101145 is an equidigital number, since it uses as much as digits as its factorization.

213320101145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42664020234.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 213320101145 its reverse (541101023312), we get a palindrome (754421124457).

The spelling of 213320101145 in words is "two hundred thirteen billion, three hundred twenty million, one hundred one thousand, one hundred forty-five".