12124220554 has 8 divisors (see below), whose sum is σ = 18484467588. Its totient is φ = 5962731360.

The previous prime is 12124220551. The next prime is 12124220557. The reversal of 12124220554 is 45502242121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12124220551) and next prime (12124220557).

It can be written as a sum of positive squares in 2 ways, for example, as 8733837025 + 3390383529 = 93455^2 + 58227^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12124220551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49689307 + ... + 49689550.

Almost surely, 2^12124220554 is an apocalyptic number.

12124220554 is a deficient number, since it is larger than the sum of its proper divisors (6360247034).

12124220554 is an equidigital number, since it uses as much as digits as its factorization.

12124220554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99378920.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 12124220554 its reverse (45502242121), we get a palindrome (57626462675).

The spelling of 12124220554 in words is "twelve billion, one hundred twenty-four million, two hundred twenty thousand, five hundred fifty-four".