2201012122221 has 24 divisors (see below), whose sum is σ = 3619055509056. Its totient is φ = 1275949055040.

The previous prime is 2201012122207. The next prime is 2201012122247. The reversal of 2201012122221 is 1222212101022.

It is a happy number.

2201012122221 is a `hidden beast` number, since 220 + 10 + 1 + 212 + 2 + 221 = 666.

It is not a de Polignac number, because 2201012122221 - 2²¹ = 2201010025069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201012122194 and 2201012122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201012120221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483311760 + ... + 483316313.

It is an arithmetic number, because the mean of its divisors is an integer number (150793979544).

Almost surely, 2^{2201012122221} is an apocalyptic number.

It is an amenable number.

2201012122221 is a deficient number, since it is larger than the sum of its proper divisors (1418043386835).

2201012122221 is a wasteful number, since it uses less digits than its factorization.

2201012122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966628113 (or 966628110 counting only the distinct ones).

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

Adding to 2201012122221 its reverse (1222212101022), we get a palindrome (3423224223243).

The spelling of 2201012122221 in words is "two trillion, two hundred one billion, twelve million, one hundred twenty-two thousand, two hundred twenty-one".