1253122013 has 16 divisors (see below), whose sum is σ = 1473256512. Its totient is φ = 1050816000.

The previous prime is 1253122007. The next prime is 1253122043. The reversal of 1253122013 is 3102213521.

It is not a de Polignac number, because 1253122013 - 2¹⁶ = 1253056477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253122043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295478 + ... + 299688.

It is an arithmetic number, because the mean of its divisors is an integer number (92078532).

Almost surely, 2^1253122013 is an apocalyptic number.

1253122013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1253122013 is a deficient number, since it is larger than the sum of its proper divisors (220134499).

1253122013 is a wasteful number, since it uses less digits than its factorization.

1253122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6316.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1253122013 is about 35399.4634563859. The cubic root of 1253122013 is about 1078.1134224933.

Adding to 1253122013 its reverse (3102213521), we get a palindrome (4355335534).

The spelling of 1253122013 in words is "one billion, two hundred fifty-three million, one hundred twenty-two thousand, thirteen".