10112112121 has 4 divisors (see below), whose sum is σ = 10358749044. Its totient is φ = 9865475200.

The previous prime is 10112112107. The next prime is 10112112161. The reversal of 10112112121 is 12121121101.

It is a happy number.

10112112121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313290000 + 9798822121 = 17700^2 + 98989^2 .

It is a cyclic number.

It is not a de Polignac number, because 10112112121 - 2⁵ = 10112112089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10112112161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123318400 + ... + 123318481.

It is an arithmetic number, because the mean of its divisors is an integer number (2589687261).

Almost surely, 2^10112112121 is an apocalyptic number.

It is an amenable number.

10112112121 is a deficient number, since it is larger than the sum of its proper divisors (246636923).

10112112121 is an equidigital number, since it uses as much as digits as its factorization.

10112112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246636922.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10112112121 its reverse (12121121101), we get a palindrome (22233233222).

The spelling of 10112112121 in words is "ten billion, one hundred twelve million, one hundred twelve thousand, one hundred twenty-one".