61212388722 has 8 divisors (see below), whose sum is σ = 122424777456. Its totient is φ = 20404129572.

The previous prime is 61212388621. The next prime is 61212388723. The reversal of 61212388722 is 22788321216.

It is a sphenic number, since it is the product of 3 distinct primes.

61212388722 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (61212388723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101032388 + ... + 5101032399.

It is an arithmetic number, because the mean of its divisors is an integer number (15303097182).

Almost surely, 2^61212388722 is an apocalyptic number.

61212388722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61212388722 is a wasteful number, since it uses less digits than its factorization.

61212388722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10202064792.

The product of its digits is 129024, while the sum is 42.

The spelling of 61212388722 in words is "sixty-one billion, two hundred twelve million, three hundred eighty-eight thousand, seven hundred twenty-two".