44422012421 has 2 divisors, whose sum is σ = 44422012422. Its totient is φ = 44422012420.

The previous prime is 44422012363. The next prime is 44422012471. The reversal of 44422012421 is 12421022444.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43979961796 + 442050625 = 209714^2 + 21025^2 .

It is a cyclic number.

It is not a de Polignac number, because 44422012421 - 2¹⁰ = 44422011397 is a prime.

It is a super-3 number, since 3×44422012421³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44422012471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22211006210 + 22211006211.

It is an arithmetic number, because the mean of its divisors is an integer number (22211006211).

Almost surely, 2^44422012421 is an apocalyptic number.

It is an amenable number.

44422012421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44422012421 is an equidigital number, since it uses as much as digits as its factorization.

44422012421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 44422012421 its reverse (12421022444), we get a palindrome (56843034865).

The spelling of 44422012421 in words is "forty-four billion, four hundred twenty-two million, twelve thousand, four hundred twenty-one".