210444344421411 has 16 divisors (see below), whose sum is σ = 280635097018016. Its totient is φ = 140274912001536.

The previous prime is 210444344421391. The next prime is 210444344421413. The reversal of 210444344421411 is 114124443444012.

It is a happy number.

It is not a de Polignac number, because 210444344421411 - 2²¹ = 210444342324259 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 210444344421411.

It is not an unprimeable number, because it can be changed into a prime (210444344421413) 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, 741347541 + ... + 741631353.

It is an arithmetic number, because the mean of its divisors is an integer number (17539693563626).

Almost surely, 2^{210444344421411} is an apocalyptic number.

210444344421411 is a deficient number, since it is larger than the sum of its proper divisors (70190752596605).

210444344421411 is a wasteful number, since it uses less digits than its factorization.

210444344421411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320502.

The product of its (nonzero) digits is 196608, while the sum is 39.

Adding to 210444344421411 its reverse (114124443444012), we get a palindrome (324568787865423).

The spelling of 210444344421411 in words is "two hundred ten trillion, four hundred forty-four billion, three hundred forty-four million, four hundred twenty-one thousand, four hundred eleven".