12421022445 has 48 divisors (see below), whose sum is σ = 23199125040. Its totient is φ = 6111479808.

The previous prime is 12421022429. The next prime is 12421022479. The reversal of 12421022445 is 54422012421.

It is a happy number.

12421022445 is a `hidden beast` number, since 1 + 2 + 4 + 210 + 2 + 2 + 445 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 4077844164 + 8343178281 = 63858^2 + 91341^2 .

It is not a de Polignac number, because 12421022445 - 2⁴ = 12421022429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1240479 + ... + 1250451.

It is an arithmetic number, because the mean of its divisors is an integer number (483315105).

Almost surely, 2^12421022445 is an apocalyptic number.

12421022445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12421022445 is a deficient number, since it is larger than the sum of its proper divisors (10778102595).

12421022445 is a wasteful number, since it uses less digits than its factorization.

12421022445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12126 (or 12123 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 12421022445 its reverse (54422012421), we get a palindrome (66843034866).

The spelling of 12421022445 in words is "twelve billion, four hundred twenty-one million, twenty-two thousand, four hundred forty-five".