1123010021 has 16 divisors (see below), whose sum is σ = 1366554240. Its totient is φ = 900879360.

The previous prime is 1123009957. The next prime is 1123010023. The reversal of 1123010021 is 1200103211.

It is a cyclic number.

It is not a de Polignac number, because 1123010021 - 2⁶ = 1123009957 is a prime.

It is a super-3 number, since 3×1123010021³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123009984 and 1123010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123010023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5060 + ... + 47661.

It is an arithmetic number, because the mean of its divisors is an integer number (85409640).

Almost surely, 2^1123010021 is an apocalyptic number.

It is an amenable number.

1123010021 is a deficient number, since it is larger than the sum of its proper divisors (243544219).

1123010021 is a wasteful number, since it uses less digits than its factorization.

1123010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52924.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1123010021 is about 33511.3416771099. The cubic root of 1123010021 is about 1039.4283165379.

Adding to 1123010021 its reverse (1200103211), we get a palindrome (2323113232).

The spelling of 1123010021 in words is "one billion, one hundred twenty-three million, ten thousand, twenty-one".