212122021441 has 16 divisors (see below), whose sum is σ = 238306867200. Its totient is φ = 187170094800.

The previous prime is 212122021429. The next prime is 212122021487. The reversal of 212122021441 is 144120221212.

It is a cyclic number.

It is not a de Polignac number, because 212122021441 - 2¹⁹ = 212121497153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122021141) 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, 2017365 + ... + 2119906.

It is an arithmetic number, because the mean of its divisors is an integer number (14894179200).

Almost surely, 2^212122021441 is an apocalyptic number.

It is an amenable number.

212122021441 is a deficient number, since it is larger than the sum of its proper divisors (26184845759).

212122021441 is a wasteful number, since it uses less digits than its factorization.

212122021441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137420.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212122021441 its reverse (144120221212), we get a palindrome (356242242653).

The spelling of 212122021441 in words is "two hundred twelve billion, one hundred twenty-two million, twenty-one thousand, four hundred forty-one".