1110100121 has 4 divisors (see below), whose sum is σ = 1195492452. Its totient is φ = 1024707792.

The previous prime is 1110100087. The next prime is 1110100127. The reversal of 1110100121 is 1210010111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210010111 = 313 ⋅3865847.

It can be written as a sum of positive squares in 2 ways, for example, as 554838025 + 555262096 = 23555^2 + 23564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110100121 is a prime.

It is a super-3 number, since 3×1110100121³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110100099 and 1110100108.

It is not an unprimeable number, because it can be changed into a prime (1110100127) 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, 42696146 + ... + 42696171.

It is an arithmetic number, because the mean of its divisors is an integer number (298873113).

Almost surely, 2^1110100121 is an apocalyptic number.

It is an amenable number.

1110100121 is a deficient number, since it is larger than the sum of its proper divisors (85392331).

1110100121 is an equidigital number, since it uses as much as digits as its factorization.

1110100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85392330.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1110100121 is about 33318.1650305055. The cubic root of 1110100121 is about 1035.4299351923.

Adding to 1110100121 its reverse (1210010111), we get a palindrome (2320110232).

The spelling of 1110100121 in words is "one billion, one hundred ten million, one hundred thousand, one hundred twenty-one".