1121020121 has 8 divisors (see below), whose sum is σ = 1270792320. Its totient is φ = 980325072.

The previous prime is 1121020093. The next prime is 1121020129. The reversal of 1121020121 is 1210201211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121020121 - 2⁶ = 1121020057 is a prime.

It is a super-2 number, since 2×1121020121² = 2513372223373709282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121020129) 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, 2269025 + ... + 2269518.

It is an arithmetic number, because the mean of its divisors is an integer number (158849040).

Almost surely, 2^1121020121 is an apocalyptic number.

It is an amenable number.

1121020121 is a deficient number, since it is larger than the sum of its proper divisors (149772199).

1121020121 is a wasteful number, since it uses less digits than its factorization.

1121020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4538575.

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

The square root of 1121020121 is about 33481.6385650404. The cubic root of 1121020121 is about 1038.8140206612.

Adding to 1121020121 its reverse (1210201211), we get a palindrome (2331221332).

The spelling of 1121020121 in words is "one billion, one hundred twenty-one million, twenty thousand, one hundred twenty-one".