212421034144441 has 16 divisors (see below), whose sum is σ = 225487653558480. Its totient is φ = 199417981132800.

The previous prime is 212421034144409. The next prime is 212421034144511. The reversal of 212421034144441 is 144441430124212.

It can be written as a sum of positive squares in 8 ways, for example, as 27623654384041 + 184797379760400 = 5255821^2 + 13594020^2 .

It is not a de Polignac number, because 212421034144441 - 2⁵ = 212421034144409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212421034144441.

It is not an unprimeable number, because it can be changed into a prime (212421034144541) 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, 72267805 + ... + 75149701.

It is an arithmetic number, because the mean of its divisors is an integer number (14092978347405).

Almost surely, 2^{212421034144441} is an apocalyptic number.

It is an amenable number.

212421034144441 is a deficient number, since it is larger than the sum of its proper divisors (13066619414039).

212421034144441 is a wasteful number, since it uses less digits than its factorization.

212421034144441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892924.

The product of its (nonzero) digits is 98304, while the sum is 37.

Adding to 212421034144441 its reverse (144441430124212), we get a palindrome (356862464268653).

The spelling of 212421034144441 in words is "two hundred twelve trillion, four hundred twenty-one billion, thirty-four million, one hundred forty-four thousand, four hundred forty-one".