10112212112121 has 20 divisors (see below), whose sum is σ = 17263882407552. Its totient is φ = 5778406920888.

The previous prime is 10112212112099. The next prime is 10112212112131. The reversal of 10112212112121 is 12121121221101.

It is a happy number.

10112212112121 is a `hidden beast` number, since 10 + 11 + 221 + 211 + 212 + 1 = 666.

It is not a de Polignac number, because 10112212112121 - 2⁵ = 10112212112089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10112212112094 and 10112212112103.

It is not an unprimeable number, because it can be changed into a prime (10112212112131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8917294065 + ... + 8917295198.

Almost surely, 2^{10112212112121} is an apocalyptic number.

It is an amenable number.

10112212112121 is a deficient number, since it is larger than the sum of its proper divisors (7151670295431).

10112212112121 is an equidigital number, since it uses as much as digits as its factorization.

10112212112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17834589282 (or 17834589273 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 10112212112121 its reverse (12121121221101), we get a palindrome (22233333333222).

The spelling of 10112212112121 in words is "ten trillion, one hundred twelve billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".