211122202044 has 48 divisors (see below), whose sum is σ = 535470300288. Its totient is φ = 64353563328.

The previous prime is 211122202021. The next prime is 211122202069. The reversal of 211122202044 is 440202221112.

It is a self number, because there is not a number n which added to its sum of digits gives 211122202044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6307362 + ... + 6340745.

It is an arithmetic number, because the mean of its divisors is an integer number (11155631256).

Almost surely, 2^211122202044 is an apocalyptic number.

It is an amenable number.

211122202044 is an abundant number, since it is smaller than the sum of its proper divisors (324348098244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211122202044 is a wasteful number, since it uses less digits than its factorization.

211122202044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12648234 (or 12648232 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 211122202044 its reverse (440202221112), we get a palindrome (651324423156).

The spelling of 211122202044 in words is "two hundred eleven billion, one hundred twenty-two million, two hundred two thousand, forty-four".