2121222102201 has 16 divisors (see below), whose sum is σ = 3154147403520. Its totient is φ = 1408929804720.

The previous prime is 2121222102169. The next prime is 2121222102217. The reversal of 2121222102201 is 1022012221212.

It is a happy number.

2121222102201 is a `hidden beast` number, since 21 + 212 + 2 + 210 + 220 + 1 = 666.

It is not a de Polignac number, because 2121222102201 - 2⁵ = 2121222102169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121222102221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144944310 + ... + 144958943.

It is an arithmetic number, because the mean of its divisors is an integer number (197134212720).

Almost surely, 2^{2121222102201} is an apocalyptic number.

It is an amenable number.

2121222102201 is a deficient number, since it is larger than the sum of its proper divisors (1032925301319).

2121222102201 is a wasteful number, since it uses less digits than its factorization.

2121222102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289903533 (or 289903527 counting only the distinct ones).

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

Adding to 2121222102201 its reverse (1022012221212), we get a palindrome (3143234323413).

The spelling of 2121222102201 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred two thousand, two hundred one".