211140223505522 has 4 divisors (see below), whose sum is σ = 316710335258286. Its totient is φ = 105570111752760.

The previous prime is 211140223505501. The next prime is 211140223505527. The reversal of 211140223505522 is 225505322041112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143838069549001 + 67302153956521 = 11993251^2 + 8203789^2 .

It is not an unprimeable number, because it can be changed into a prime (211140223505527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52785055876379 + ... + 52785055876382.

Almost surely, 2^{211140223505522} is an apocalyptic number.

211140223505522 is a deficient number, since it is larger than the sum of its proper divisors (105570111752764).

211140223505522 is a wasteful number, since it uses less digits than its factorization.

211140223505522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105570111752763.

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 211140223505522 its reverse (225505322041112), we get a palindrome (436645545546634).

The spelling of 211140223505522 in words is "two hundred eleven trillion, one hundred forty billion, two hundred twenty-three million, five hundred five thousand, five hundred twenty-two".