2210001221201 has 8 divisors (see below), whose sum is σ = 2217461500200. Its totient is φ = 2202543487872.

The previous prime is 2210001221137. The next prime is 2210001221257. The reversal of 2210001221201 is 1021221000122.

It can be written as a sum of positive squares in 4 ways, for example, as 254056321600 + 1955944899601 = 504040^2 + 1398551^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2210001221201 - 2⁶ = 2210001221137 is a prime.

It is a super-2 number, since 2×2210001221201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2210001521201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110875 + ... + 2377823.

It is an arithmetic number, because the mean of its divisors is an integer number (277182687525).

Almost surely, 2^{2210001221201} is an apocalyptic number.

It is an amenable number.

2210001221201 is a deficient number, since it is larger than the sum of its proper divisors (7460278999).

2210001221201 is a wasteful number, since it uses less digits than its factorization.

2210001221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272835.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2210001221201 its reverse (1021221000122), we get a palindrome (3231222221323).

The spelling of 2210001221201 in words is "two trillion, two hundred ten billion, one million, two hundred twenty-one thousand, two hundred one".