2201222101221 has 96 divisors (see below), whose sum is σ = 3956883944832. Its totient is φ = 1158502625280.

The previous prime is 2201222101217. The next prime is 2201222101229. The reversal of 2201222101221 is 1221012221022.

It is a happy number.

2201222101221 is a `hidden beast` number, since 220 + 1 + 2 + 221 + 0 + 1 + 221 = 666.

It is not a de Polignac number, because 2201222101221 - 2² = 2201222101217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201222101194 and 2201222101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201222101229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 52335426 + ... + 52377468.

It is an arithmetic number, because the mean of its divisors is an integer number (41217541092).

Almost surely, 2^{2201222101221} is an apocalyptic number.

It is an amenable number.

2201222101221 is a deficient number, since it is larger than the sum of its proper divisors (1755661843611).

2201222101221 is a wasteful number, since it uses less digits than its factorization.

2201222101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44483 (or 44480 counting only the distinct ones).

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

Adding to 2201222101221 its reverse (1221012221022), we get a palindrome (3422234322243).

The spelling of 2201222101221 in words is "two trillion, two hundred one billion, two hundred twenty-two million, one hundred one thousand, two hundred twenty-one".