12215442069 has 24 divisors (see below), whose sum is σ = 18033912000. Its totient is φ = 7965302400.

The previous prime is 12215442037. The next prime is 12215442097. The reversal of 12215442069 is 96024451221.

It is a happy number.

12215442069 is a `hidden beast` number, since 1 + 22 + 154 + 420 + 69 = 666.

It is not a de Polignac number, because 12215442069 - 2⁵ = 12215442037 is a prime.

It is a super-2 number, since 2×12215442069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215442469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47869 + ... + 163469.

It is an arithmetic number, because the mean of its divisors is an integer number (751413000).

Almost surely, 2^12215442069 is an apocalyptic number.

It is an amenable number.

12215442069 is a deficient number, since it is larger than the sum of its proper divisors (5818469931).

12215442069 is a wasteful number, since it uses less digits than its factorization.

12215442069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115865 (or 115862 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 12215442069 in words is "twelve billion, two hundred fifteen million, four hundred forty-two thousand, sixty-nine".