1012011123 has 4 divisors (see below), whose sum is σ = 1349348168. Its totient is φ = 674674080.

The previous prime is 1012011107. The next prime is 1012011157. The reversal of 1012011123 is 3211102101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211102101 = 3 ⋅1070367367.

It is not a de Polignac number, because 1012011123 - 2⁴ = 1012011107 is a prime.

It is a super-2 number, since 2×1012011123² = 2048333026151442258, 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 = 1012011099 and 1012011108.

It is not an unprimeable number, because it can be changed into a prime (1012011023) 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, 168668518 + ... + 168668523.

It is an arithmetic number, because the mean of its divisors is an integer number (337337042).

Almost surely, 2^1012011123 is an apocalyptic number.

1012011123 is a deficient number, since it is larger than the sum of its proper divisors (337337045).

1012011123 is an equidigital number, since it uses as much as digits as its factorization.

1012011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337337044.

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

The square root of 1012011123 is about 31812.1222649480. The cubic root of 1012011123 is about 1003.9877841061.

Adding to 1012011123 its reverse (3211102101), we get a palindrome (4223113224).

The spelling of 1012011123 in words is "one billion, twelve million, eleven thousand, one hundred twenty-three".