1020112123 has 4 divisors (see below), whose sum is σ = 1064464848. Its totient is φ = 975759400.

The previous prime is 1020112087. The next prime is 1020112127. The reversal of 1020112123 is 3212110201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020112123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020112127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22176328 + ... + 22176373.

It is an arithmetic number, because the mean of its divisors is an integer number (266116212).

Almost surely, 2^1020112123 is an apocalyptic number.

1020112123 is a deficient number, since it is larger than the sum of its proper divisors (44352725).

1020112123 is an equidigital number, since it uses as much as digits as its factorization.

1020112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44352724.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1020112123 is about 31939.1941507609. The cubic root of 1020112123 is about 1006.6595923780.

Adding to 1020112123 its reverse (3212110201), we get a palindrome (4232222324).

The spelling of 1020112123 in words is "one billion, twenty million, one hundred twelve thousand, one hundred twenty-three".