112100020121 has 4 divisors (see below), whose sum is σ = 118000021200. Its totient is φ = 106200019044.

The previous prime is 112100020103. The next prime is 112100020139. The reversal of 112100020121 is 121020001211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121020001211 = 4909 ⋅24652679.

It is an interprime number because it is at equal distance from previous prime (112100020103) and next prime (112100020139).

It is a cyclic number.

It is not a de Polignac number, because 112100020121 - 2¹⁴ = 112100003737 is a prime.

It is a super-2 number, since 2×112100020121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112100023121) 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, 2950000511 + ... + 2950000548.

It is an arithmetic number, because the mean of its divisors is an integer number (29500005300).

Almost surely, 2^112100020121 is an apocalyptic number.

It is an amenable number.

112100020121 is a deficient number, since it is larger than the sum of its proper divisors (5900001079).

112100020121 is an equidigital number, since it uses as much as digits as its factorization.

112100020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900001078.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 112100020121 its reverse (121020001211), we get a palindrome (233120021332).

The spelling of 112100020121 in words is "one hundred twelve billion, one hundred million, twenty thousand, one hundred twenty-one".