221211002022201 has 6 divisors (see below), whose sum is σ = 319527002920970. Its totient is φ = 147474001348128.

The previous prime is 221211002022181. The next prime is 221211002022211. The reversal of 221211002022201 is 102220200112122.

It is a happy number.

221211002022201 is a `hidden beast` number, since 22 + 121 + 100 + 202 + 220 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 210340634765625 + 10870367256576 = 14503125^2 + 3297024^2 .

It is not a de Polignac number, because 221211002022201 - 2¹⁴ = 221211002005817 is a prime.

It is a super-3 number, since 3×221211002022201³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221211002022211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12289500112336 + ... + 12289500112353.

Almost surely, 2^{221211002022201} is an apocalyptic number.

It is an amenable number.

221211002022201 is a deficient number, since it is larger than the sum of its proper divisors (98316000898769).

221211002022201 is a wasteful number, since it uses less digits than its factorization.

221211002022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24579000224695 (or 24579000224692 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221211002022201 its reverse (102220200112122), we get a palindrome (323431202134323).

The spelling of 221211002022201 in words is "two hundred twenty-one trillion, two hundred eleven billion, two million, twenty-two thousand, two hundred one".