10122212121 has 8 divisors (see below), whose sum is σ = 15424323264. Its totient is φ = 5784121200.

The previous prime is 10122212099. The next prime is 10122212197. The reversal of 10122212121 is 12121222101.

10122212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10122212121 - 2⁷ = 10122211993 is a prime.

10122212121 is a modest number, since divided by 212121 gives 10122 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 10122212121.

It is not an unprimeable number, because it can be changed into a prime (10122212921) 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 7 ways as a sum of consecutive naturals, for example, 241005030 + ... + 241005071.

It is an arithmetic number, because the mean of its divisors is an integer number (1928040408).

Almost surely, 2^10122212121 is an apocalyptic number.

It is an amenable number.

10122212121 is a deficient number, since it is larger than the sum of its proper divisors (5302111143).

10122212121 is an equidigital number, since it uses as much as digits as its factorization.

10122212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482010111.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10122212121 its reverse (12121222101), we get a palindrome (22243434222).

The spelling of 10122212121 in words is "ten billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".