73215103122 has 90 divisors (see below), whose sum is σ = 190903587237. Its totient is φ = 20911712976.

The previous prime is 73215103121. The next prime is 73215103153. The reversal of 73215103122 is 22130151237.

73215103122 is a `hidden beast` number, since 7 + 3 + 21 + 510 + 3 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 62965363041 + 10249740081 = 250929^2 + 101241^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=191331.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (73215103121) 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 44 ways as a sum of consecutive naturals, for example, 24106188 + ... + 24109224.

Almost surely, 2^73215103122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73215103122

73215103122 is an abundant number, since it is smaller than the sum of its proper divisors (117688484115).

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

73215103122 is an frugal number, since it uses more digits than its factorization.

73215103122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102 (or 3049 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 73215103122 its reverse (22130151237), we get a palindrome (95345254359).

The spelling of 73215103122 in words is "seventy-three billion, two hundred fifteen million, one hundred three thousand, one hundred twenty-two".