12215442098 has 4 divisors (see below), whose sum is σ = 18323163150. Its totient is φ = 6107721048.

The previous prime is 12215442097. The next prime is 12215442101. The reversal of 12215442098 is 89024451221.

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

It can be written as a sum of positive squares in only one way, i.e., 9422002489 + 2793439609 = 97067^2 + 52853^2 .

It is not an unprimeable number, because it can be changed into a prime (12215442097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3053860523 + ... + 3053860526.

Almost surely, 2^12215442098 is an apocalyptic number.

12215442098 is a deficient number, since it is larger than the sum of its proper divisors (6107721052).

12215442098 is an equidigital number, since it uses as much as digits as its factorization.

12215442098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6107721051.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 12215442098 in words is "twelve billion, two hundred fifteen million, four hundred forty-two thousand, ninety-eight".