221013044001245 has 16 divisors (see below), whose sum is σ = 265949168410800. Its totient is φ = 176321848012800.

The previous prime is 221013044001199. The next prime is 221013044001257. The reversal of 221013044001245 is 542100440310122.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 469812914041 + 220543231087204 = 685429^2 + 14850698^2 .

It is not a de Polignac number, because 221013044001245 - 2¹² = 221013043997149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22272026 + ... + 30627915.

It is an arithmetic number, because the mean of its divisors is an integer number (16621823025675).

Almost surely, 2^{221013044001245} is an apocalyptic number.

It is an amenable number.

221013044001245 is a deficient number, since it is larger than the sum of its proper divisors (44936124409555).

221013044001245 is a wasteful number, since it uses less digits than its factorization.

221013044001245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52902256.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 221013044001245 its reverse (542100440310122), we get a palindrome (763113484311367).

The spelling of 221013044001245 in words is "two hundred twenty-one trillion, thirteen billion, forty-four million, one thousand, two hundred forty-five".