2122212121001 has 36 divisors (see below), whose sum is σ = 2524791172176. Its totient is φ = 1778605189200.

The previous prime is 2122212120971. The next prime is 2122212121013. The reversal of 2122212121001 is 1001212122212.

It is not a de Polignac number, because 2122212121001 - 2⁶ = 2122212120937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122212121031) 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 35 ways as a sum of consecutive naturals, for example, 118081946 + ... + 118099916.

It is an arithmetic number, because the mean of its divisors is an integer number (70133088116).

Almost surely, 2^{2122212121001} is an apocalyptic number.

It is an amenable number.

2122212121001 is a deficient number, since it is larger than the sum of its proper divisors (402579051175).

2122212121001 is a wasteful number, since it uses less digits than its factorization.

2122212121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19170 (or 19116 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2122212121001 its reverse (1001212122212), we get a palindrome (3123424243213).

The spelling of 2122212121001 in words is "two trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, one".