22121212022001 has 16 divisors (see below), whose sum is σ = 32896774965120. Its totient is φ = 14691400628400.

The previous prime is 22121212021957. The next prime is 22121212022087. The reversal of 22121212022001 is 10022021212122.

It is a happy number.

22121212022001 is a `hidden beast` number, since 221 + 21 + 21 + 202 + 200 + 1 = 666.

It is not a de Polignac number, because 22121212022001 - 2⁷ = 22121212021873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121212022101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1557605350 + ... + 1557619551.

It is an arithmetic number, because the mean of its divisors is an integer number (2056048435320).

Almost surely, 2^{22121212022001} is an apocalyptic number.

It is an amenable number.

22121212022001 is a deficient number, since it is larger than the sum of its proper divisors (10775562943119).

22121212022001 is a wasteful number, since it uses less digits than its factorization.

22121212022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115225173 (or 3115225167 counting only the distinct ones).

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

Adding to 22121212022001 its reverse (10022021212122), we get a palindrome (32143233234123).

The spelling of 22121212022001 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, twenty-two thousand, one".