1050123121 has 4 divisors (see below), whose sum is σ = 1095780672. Its totient is φ = 1004465572.

The previous prime is 1050123101. The next prime is 1050123127. The reversal of 1050123121 is 1213210501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1050123121 - 2⁷ = 1050122993 is a prime.

It is a super-2 number, since 2×1050123121² = 2205517138517561282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1050123095 and 1050123104.

It is not an unprimeable number, because it can be changed into a prime (1050123127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22828741 + ... + 22828786.

It is an arithmetic number, because the mean of its divisors is an integer number (273945168).

Almost surely, 2^1050123121 is an apocalyptic number.

It is an amenable number.

1050123121 is a deficient number, since it is larger than the sum of its proper divisors (45657551).

1050123121 is an equidigital number, since it uses as much as digits as its factorization.

1050123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45657550.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1050123121 is about 32405.6032346260. The cubic root of 1050123121 is about 1016.4360821625.

Adding to 1050123121 its reverse (1213210501), we get a palindrome (2263333622).

The spelling of 1050123121 in words is "one billion, fifty million, one hundred twenty-three thousand, one hundred twenty-one".