12215442068 has 24 divisors (see below), whose sum is σ = 21435016680. Its totient is φ = 6091176960.

The previous prime is 12215442037. The next prime is 12215442097. The reversal of 12215442068 is 86024451221.

It can be written as a sum of positive squares in 4 ways, for example, as 551874064 + 11663568004 = 23492^2 + 107998^2 .

It is a super-3 number, since 3×12215442068³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2580728 + ... + 2585456.

It is an arithmetic number, because the mean of its divisors is an integer number (893125695).

Almost surely, 2^12215442068 is an apocalyptic number.

It is an amenable number.

12215442068 is a deficient number, since it is larger than the sum of its proper divisors (9219574612).

12215442068 is a wasteful number, since it uses less digits than its factorization.

12215442068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6347 (or 6345 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

Adding to 12215442068 its reverse (86024451221), we get a palindrome (98239893289).

The spelling of 12215442068 in words is "twelve billion, two hundred fifteen million, four hundred forty-two thousand, sixty-eight".