211021322212 has 24 divisors (see below), whose sum is σ = 374374813400. Its totient is φ = 104057312256.

The previous prime is 211021322209. The next prime is 211021322219. The reversal of 211021322212 is 212223120112.

It can be written as a sum of positive squares in 4 ways, for example, as 208109476 + 210813212736 = 14426^2 + 459144^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211021322212.

It is not an unprimeable number, because it can be changed into a prime (211021322219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6058864 + ... + 6093592.

Almost surely, 2^211021322212 is an apocalyptic number.

It is an amenable number.

211021322212 is a deficient number, since it is larger than the sum of its proper divisors (163353491188).

211021322212 is a wasteful number, since it uses less digits than its factorization.

211021322212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55615 (or 55613 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 211021322212 its reverse (212223120112), we get a palindrome (423244442324).

The spelling of 211021322212 in words is "two hundred eleven billion, twenty-one million, three hundred twenty-two thousand, two hundred twelve".