10021112121 has 8 divisors (see below), whose sum is σ = 13942416960. Its totient is φ = 6390274352.

The previous prime is 10021112119. The next prime is 10021112141. The reversal of 10021112121 is 12121112001.

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

It is a cyclic number.

It is not a de Polignac number, because 10021112121 - 2¹ = 10021112119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021112097 and 10021112106.

It is not an unprimeable number, because it can be changed into a prime (10021112141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72616686 + ... + 72616823.

It is an arithmetic number, because the mean of its divisors is an integer number (1742802120).

Almost surely, 2^10021112121 is an apocalyptic number.

It is an amenable number.

10021112121 is a deficient number, since it is larger than the sum of its proper divisors (3921304839).

10021112121 is a wasteful number, since it uses less digits than its factorization.

10021112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145233535.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10021112121 its reverse (12121112001), we get a palindrome (22142224122).

The spelling of 10021112121 in words is "ten billion, twenty-one million, one hundred twelve thousand, one hundred twenty-one".