44220132421 has 2 divisors, whose sum is σ = 44220132422. Its totient is φ = 44220132420.

The previous prime is 44220132389. The next prime is 44220132427. The reversal of 44220132421 is 12423102244.

44220132421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36992752225 + 7227380196 = 192335^2 + 85014^2 .

It is a cyclic number.

It is not a de Polignac number, because 44220132421 - 2⁵ = 44220132389 is a prime.

It is a super-2 number, since 2×44220132421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44220132427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22110066210 + 22110066211.

It is an arithmetic number, because the mean of its divisors is an integer number (22110066211).

Almost surely, 2^44220132421 is an apocalyptic number.

It is an amenable number.

44220132421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44220132421 is an equidigital number, since it uses as much as digits as its factorization.

44220132421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 44220132421 its reverse (12423102244), we get a palindrome (56643234665).

The spelling of 44220132421 in words is "forty-four billion, two hundred twenty million, one hundred thirty-two thousand, four hundred twenty-one".