1012321123 has 4 divisors (see below), whose sum is σ = 1104350328. Its totient is φ = 920291920.

The previous prime is 1012321111. The next prime is 1012321127. The reversal of 1012321123 is 3211232101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012321123 - 2⁹ = 1012320611 is a prime.

It is a super-2 number, since 2×1012321123² = 2049588112143962258, 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 = 1012321097 and 1012321106.

It is not an unprimeable number, because it can be changed into a prime (1012321127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46014586 + ... + 46014607.

It is an arithmetic number, because the mean of its divisors is an integer number (276087582).

Almost surely, 2^1012321123 is an apocalyptic number.

1012321123 is a deficient number, since it is larger than the sum of its proper divisors (92029205).

1012321123 is an equidigital number, since it uses as much as digits as its factorization.

1012321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92029204.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1012321123 is about 31816.9942483573. The cubic root of 1012321123 is about 1004.0902877355.

Adding to 1012321123 its reverse (3211232101), we get a palindrome (4223553224).

The spelling of 1012321123 in words is "one billion, twelve million, three hundred twenty-one thousand, one hundred twenty-three".