44021121211 has 2 divisors, whose sum is σ = 44021121212. Its totient is φ = 44021121210.

The previous prime is 44021121197. The next prime is 44021121227. The reversal of 44021121211 is 11212112044.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44021121211 - 2³¹ = 41873637563 is a prime.

It is a super-2 number, since 2×44021121211² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44021161211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22010560605 + 22010560606.

It is an arithmetic number, because the mean of its divisors is an integer number (22010560606).

Almost surely, 2^44021121211 is an apocalyptic number.

44021121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

44021121211 is an equidigital number, since it uses as much as digits as its factorization.

44021121211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 44021121211 its reverse (11212112044), we get a palindrome (55233233255).

The spelling of 44021121211 in words is "forty-four billion, twenty-one million, one hundred twenty-one thousand, two hundred eleven".