1252111123 has 2 divisors, whose sum is σ = 1252111124. Its totient is φ = 1252111122.

The previous prime is 1252111097. The next prime is 1252111151. The reversal of 1252111123 is 3211112521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1252111123 - 2⁹ = 1252110611 is a prime.

It is a super-2 number, since 2×1252111123² = 3135564528680642258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1252111123.

It is not a weakly prime, because it can be changed into another prime (1252111823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626055561 + 626055562.

It is an arithmetic number, because the mean of its divisors is an integer number (626055562).

Almost surely, 2^1252111123 is an apocalyptic number.

1252111123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252111123 is an equidigital number, since it uses as much as digits as its factorization.

1252111123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 19.

The square root of 1252111123 is about 35385.1822518975. The cubic root of 1252111123 is about 1077.8234408160.

Adding to 1252111123 its reverse (3211112521), we get a palindrome (4463223644).

The spelling of 1252111123 in words is "one billion, two hundred fifty-two million, one hundred eleven thousand, one hundred twenty-three".