211402442021441 has 16 divisors (see below), whose sum is σ = 237035061737280. Its totient is φ = 186846806537280.

The previous prime is 211402442021437. The next prime is 211402442021447. The reversal of 211402442021441 is 144120244204112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211402442021441 - 2² = 211402442021437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211402442021398 and 211402442021407.

It is not an unprimeable number, because it can be changed into a prime (211402442021447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198173606 + ... + 199237503.

It is an arithmetic number, because the mean of its divisors is an integer number (14814691358580).

Almost surely, 2^{211402442021441} is an apocalyptic number.

It is an amenable number.

211402442021441 is a deficient number, since it is larger than the sum of its proper divisors (25632619715839).

211402442021441 is a wasteful number, since it uses less digits than its factorization.

211402442021441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397412464.

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 211402442021441 its reverse (144120244204112), we get a palindrome (355522686225553).

The spelling of 211402442021441 in words is "two hundred eleven trillion, four hundred two billion, four hundred forty-two million, twenty-one thousand, four hundred forty-one".