1012010123 has 4 divisors (see below), whose sum is σ = 1021835568. Its totient is φ = 1002184680.

The previous prime is 1012010101. The next prime is 1012010149. The reversal of 1012010123 is 3210102101.

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 1012010123 - 2⁶ = 1012010059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012010183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4912568 + ... + 4912773.

It is an arithmetic number, because the mean of its divisors is an integer number (255458892).

Almost surely, 2^1012010123 is an apocalyptic number.

1012010123 is a deficient number, since it is larger than the sum of its proper divisors (9825445).

1012010123 is an equidigital number, since it uses as much as digits as its factorization.

1012010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9825444.

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

The square root of 1012010123 is about 31812.1065476652. The cubic root of 1012010123 is about 1003.9874534154.

Adding to 1012010123 its reverse (3210102101), we get a palindrome (4222112224).

The spelling of 1012010123 in words is "one billion, twelve million, ten thousand, one hundred twenty-three".