1012100123 has 2 divisors, whose sum is σ = 1012100124. Its totient is φ = 1012100122.

The previous prime is 1012100039. The next prime is 1012100143. The reversal of 1012100123 is 3210012101.

It is a strong prime.

It is an emirp because it is prime and its reverse (3210012101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012100123 - 2¹⁴ = 1012083739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012100143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506050061 + 506050062.

It is an arithmetic number, because the mean of its divisors is an integer number (506050062).

Almost surely, 2^1012100123 is an apocalyptic number.

1012100123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012100123 is an equidigital number, since it uses as much as digits as its factorization.

1012100123 is an evil number, because the sum of its binary digits is even.

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

The square root of 1012100123 is about 31813.5210720222. The cubic root of 1012100123 is about 1004.0172147094.

Adding to 1012100123 its reverse (3210012101), we get a palindrome (4222112224).

The spelling of 1012100123 in words is "one billion, twelve million, one hundred thousand, one hundred twenty-three".