12553121026 has 32 divisors (see below), whose sum is σ = 19374526080. Its totient is φ = 6097981824.

The previous prime is 12553121023. The next prime is 12553121057. The reversal of 12553121026 is 62012135521.

It is a junction number, because it is equal to n+sod(n) for n = 12553120985 and 12553121003.

It is not an unprimeable number, because it can be changed into a prime (12553121023) 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, 4712571 + ... + 4715233.

It is an arithmetic number, because the mean of its divisors is an integer number (605453940).

Almost surely, 2^12553121026 is an apocalyptic number.

12553121026 is a deficient number, since it is larger than the sum of its proper divisors (6821405054).

12553121026 is a wasteful number, since it uses less digits than its factorization.

12553121026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 12553121026 its reverse (62012135521), we get a palindrome (74565256547).

The spelling of 12553121026 in words is "twelve billion, five hundred fifty-three million, one hundred twenty-one thousand, twenty-six".