221222022201 has 24 divisors (see below), whose sum is σ = 330012708480. Its totient is φ = 142693677216.

The previous prime is 221222022199. The next prime is 221222022271. The reversal of 221222022201 is 102220222122.

221222022201 is a `hidden beast` number, since 221 + 2 + 220 + 2 + 220 + 1 = 666.

It is not a de Polignac number, because 221222022201 - 2¹ = 221222022199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221222022271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1796065 + ... + 1915278.

It is an arithmetic number, because the mean of its divisors is an integer number (13750529520).

Almost surely, 2^221222022201 is an apocalyptic number.

It is an amenable number.

221222022201 is a deficient number, since it is larger than the sum of its proper divisors (108790686279).

221222022201 is a wasteful number, since it uses less digits than its factorization.

221222022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711565 (or 3711562 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221222022201 its reverse (102220222122), we get a palindrome (323442244323).

The spelling of 221222022201 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty-two thousand, two hundred one".