44031101221 has 2 divisors, whose sum is σ = 44031101222. Its totient is φ = 44031101220.

The previous prime is 44031101203. The next prime is 44031101281. The reversal of 44031101221 is 12210113044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28219296196 + 15811805025 = 167986^2 + 125745^2 .

It is a cyclic number.

It is not a de Polignac number, because 44031101221 - 2⁵ = 44031101189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44031101281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22015550610 + 22015550611.

It is an arithmetic number, because the mean of its divisors is an integer number (22015550611).

Almost surely, 2^44031101221 is an apocalyptic number.

It is an amenable number.

44031101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

44031101221 is an equidigital number, since it uses as much as digits as its factorization.

44031101221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 44031101221 its reverse (12210113044), we get a palindrome (56241214265).

The spelling of 44031101221 in words is "forty-four billion, thirty-one million, one hundred one thousand, two hundred twenty-one".