1121112100121 has 6 divisors (see below), whose sum is σ = 1213985292030. Its totient is φ = 1034872707648.

The previous prime is 1121112100109. The next prime is 1121112100139. The reversal of 1121112100121 is 1210012111211.

It can be written as a sum of positive squares in 3 ways, for example, as 151271212096 + 969840888025 = 388936^2 + 984805^2 .

It is not a de Polignac number, because 1121112100121 - 2¹⁸ = 1121111837977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121112100096 and 1121112100105.

It is not an unprimeable number, because it can be changed into a prime (1121112100181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3316899536 + ... + 3316899873.

It is an arithmetic number, because the mean of its divisors is an integer number (202330882005).

Almost surely, 2^{1121112100121} is an apocalyptic number.

It is an amenable number.

1121112100121 is a deficient number, since it is larger than the sum of its proper divisors (92873191909).

1121112100121 is an equidigital number, since it uses as much as digits as its factorization.

1121112100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6633799435 (or 6633799422 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121112100121 its reverse (1210012111211), we get a palindrome (2331124211332).

It can be divided in two parts, 11211 and 12100121, that multiplied together give a palindrome (135654456531).

The spelling of 1121112100121 in words is "one trillion, one hundred twenty-one billion, one hundred twelve million, one hundred thousand, one hundred twenty-one".