2201222102121 has 32 divisors (see below), whose sum is σ = 3729023047680. Its totient is φ = 1257137124048.

The previous prime is 2201222102099. The next prime is 2201222102143. The reversal of 2201222102121 is 1212012221022.

It is a happy number.

2201222102121 is a `hidden beast` number, since 220 + 1 + 22 + 210 + 212 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (2201222102099) and next prime (2201222102143).

It is not a de Polignac number, because 2201222102121 - 2¹⁰ = 2201222101097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201222102094 and 2201222102103.

It is not an unprimeable number, because it can be changed into a prime (2201222102221) 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 31 ways as a sum of consecutive naturals, for example, 2920981 + ... + 3596466.

It is an arithmetic number, because the mean of its divisors is an integer number (116531970240).

Almost surely, 2^{2201222102121} is an apocalyptic number.

2201222102121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2201222102121 is a deficient number, since it is larger than the sum of its proper divisors (1527800945559).

2201222102121 is a wasteful number, since it uses less digits than its factorization.

2201222102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6519250 (or 6519244 counting only the distinct ones).

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

Adding to 2201222102121 its reverse (1212012221022), we get a palindrome (3413234323143).

The spelling of 2201222102121 in words is "two trillion, two hundred one billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty-one".