211144122004 has 24 divisors (see below), whose sum is σ = 379733531688. Its totient is φ = 102652508160.

The previous prime is 211144121999. The next prime is 211144122019. The reversal of 211144122004 is 400221441112.

It can be written as a sum of positive squares in 4 ways, for example, as 25089926404 + 186054195600 = 158398^2 + 431340^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229477 + ... + 689164.

It is an arithmetic number, because the mean of its divisors is an integer number (15822230487).

Almost surely, 2^211144122004 is an apocalyptic number.

It is an amenable number.

211144122004 is a deficient number, since it is larger than the sum of its proper divisors (168589409684).

211144122004 is a wasteful number, since it uses less digits than its factorization.

211144122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920235 (or 920233 counting only the distinct ones).

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

Adding to 211144122004 its reverse (400221441112), we get a palindrome (611365563116).

The spelling of 211144122004 in words is "two hundred eleven billion, one hundred forty-four million, one hundred twenty-two thousand, four".