13012232021 has 16 divisors (see below), whose sum is σ = 14153128704. Its totient is φ = 11915280384.

The previous prime is 13012232017. The next prime is 13012232027. The reversal of 13012232021 is 12023221031.

It is a cyclic number.

It is not a de Polignac number, because 13012232021 - 2² = 13012232017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012232027) 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, 153236 + ... + 222498.

It is an arithmetic number, because the mean of its divisors is an integer number (884570544).

Almost surely, 2^13012232021 is an apocalyptic number.

It is an amenable number.

13012232021 is a deficient number, since it is larger than the sum of its proper divisors (1140896683).

13012232021 is a wasteful number, since it uses less digits than its factorization.

13012232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69580.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13012232021 its reverse (12023221031), we get a palindrome (25035453052).

It can be divided in two parts, 1301 and 2232021, that added together give a palindrome (2233322).

The spelling of 13012232021 in words is "thirteen billion, twelve million, two hundred thirty-two thousand, twenty-one".