13122222061 has 4 divisors (see below), whose sum is σ = 14131623772. Its totient is φ = 12112820352.

The previous prime is 13122222031. The next prime is 13122222103. The reversal of 13122222061 is 16022222131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6769175625 + 6353046436 = 82275^2 + 79706^2 .

It is a cyclic number.

It is not a de Polignac number, because 13122222061 - 2³¹ = 10974738413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122222031) 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 3 ways as a sum of consecutive naturals, for example, 504700836 + ... + 504700861.

It is an arithmetic number, because the mean of its divisors is an integer number (3532905943).

Almost surely, 2^13122222061 is an apocalyptic number.

It is an amenable number.

13122222061 is a deficient number, since it is larger than the sum of its proper divisors (1009401711).

13122222061 is a wasteful number, since it uses less digits than its factorization.

13122222061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009401710.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13122222061 its reverse (16022222131), we get a palindrome (29144444192).

The spelling of 13122222061 in words is "thirteen billion, one hundred twenty-two million, two hundred twenty-two thousand, sixty-one".