221233211201201 has 8 divisors (see below), whose sum is σ = 235956761111880. Its totient is φ = 206699642579968.

The previous prime is 221233211201183. The next prime is 221233211201227. The reversal of 221233211201201 is 102102112332122.

It can be written as a sum of positive squares in 4 ways, for example, as 57961651695025 + 163271559506176 = 7613255^2 + 12777776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-221233211201201 is a prime.

It is a super-2 number, since 2×221233211201201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221233211201291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47495319956 + ... + 47495324613.

It is an arithmetic number, because the mean of its divisors is an integer number (29494595138985).

Almost surely, 2^{221233211201201} is an apocalyptic number.

It is an amenable number.

221233211201201 is a deficient number, since it is larger than the sum of its proper divisors (14723549910679).

221233211201201 is a wasteful number, since it uses less digits than its factorization.

221233211201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94990644723.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 221233211201201 its reverse (102102112332122), we get a palindrome (323335323533323).

The spelling of 221233211201201 in words is "two hundred twenty-one trillion, two hundred thirty-three billion, two hundred eleven million, two hundred one thousand, two hundred one".