1121010121 has 8 divisors (see below), whose sum is σ = 1397623104. Its totient is φ = 873514320.

The previous prime is 1121010103. The next prime is 1121010139. The reversal of 1121010121 is 1210101211.

It is an interprime number because it is at equal distance from previous prime (1121010103) and next prime (1121010139).

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

It is not a de Polignac number, because 1121010121 - 2¹¹ = 1121008073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121010098 and 1121010107.

It is not an unprimeable number, because it can be changed into a prime (1121010161) 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, 7279210 + ... + 7279363.

It is an arithmetic number, because the mean of its divisors is an integer number (174702888).

Almost surely, 2^1121010121 is an apocalyptic number.

1121010121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121010121 is a deficient number, since it is larger than the sum of its proper divisors (276612983).

1121010121 is a wasteful number, since it uses less digits than its factorization.

1121010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14558591.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1121010121 is about 33481.4892291248. The cubic root of 1121010121 is about 1038.8109317571.

Adding to 1121010121 its reverse (1210101211), we get a palindrome (2331111332).

The spelling of 1121010121 in words is "one billion, one hundred twenty-one million, ten thousand, one hundred twenty-one".