1012021123 has 2 divisors, whose sum is σ = 1012021124. Its totient is φ = 1012021122.

The previous prime is 1012021117. The next prime is 1012021189. The reversal of 1012021123 is 3211202101.

1012021123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (3211202101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012021123 is a prime.

It is a super-2 number, since 2×1012021123² = 2048373506796362258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012021193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506010561 + 506010562.

It is an arithmetic number, because the mean of its divisors is an integer number (506010562).

Almost surely, 2^1012021123 is an apocalyptic number.

1012021123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012021123 is an equidigital number, since it uses as much as digits as its factorization.

1012021123 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1012021123 is about 31812.2794373493. The cubic root of 1012021123 is about 1003.9910910015.

Adding to 1012021123 its reverse (3211202101), we get a palindrome (4223223224).

The spelling of 1012021123 in words is "one billion, twelve million, twenty-one thousand, one hundred twenty-three".