44100013421 has 2 divisors, whose sum is σ = 44100013422. Its totient is φ = 44100013420.

The previous prime is 44100013381. The next prime is 44100013453. The reversal of 44100013421 is 12431000144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43944736900 + 155276521 = 209630^2 + 12461^2 .

It is a cyclic number.

It is not a de Polignac number, because 44100013421 - 2¹⁸ = 44099751277 is a prime.

It is a super-2 number, since 2×44100013421² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44100013393 and 44100013402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44100013621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22050006710 + 22050006711.

It is an arithmetic number, because the mean of its divisors is an integer number (22050006711).

Almost surely, 2^44100013421 is an apocalyptic number.

It is an amenable number.

44100013421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44100013421 is an equidigital number, since it uses as much as digits as its factorization.

44100013421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 44100013421 its reverse (12431000144), we get a palindrome (56531013565).

The spelling of 44100013421 in words is "forty-four billion, one hundred million, thirteen thousand, four hundred twenty-one".