1252122345105 has 16 divisors (see below), whose sum is σ = 2003924025600. Its totient is φ = 667622492928.

The previous prime is 1252122345079. The next prime is 1252122345107. The reversal of 1252122345105 is 5015432212521.

It is not a de Polignac number, because 1252122345105 - 2¹⁷ = 1252122214033 is a prime.

It is a super-2 number, since 2×1252122345105² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252122345107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10946905 + ... + 11060694.

It is an arithmetic number, because the mean of its divisors is an integer number (125245251600).

Almost surely, 2^{1252122345105} is an apocalyptic number.

1252122345105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252122345105 is a deficient number, since it is larger than the sum of its proper divisors (751801680495).

1252122345105 is a wasteful number, since it uses less digits than its factorization.

1252122345105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22011400.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 1252122345105 its reverse (5015432212521), we get a palindrome (6267554557626).

The spelling of 1252122345105 in words is "one trillion, two hundred fifty-two billion, one hundred twenty-two million, three hundred forty-five thousand, one hundred five".