211914822242 has 18 divisors (see below), whose sum is σ = 319994571393. Its totient is φ = 105254632872.

The previous prime is 211914822239. The next prime is 211914822253. The reversal of 211914822242 is 242228419112.

It can be written as a sum of positive squares in 2 ways, for example, as 138965673961 + 72949148281 = 372781^2 + 270091^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=325511.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211914822196 and 211914822205.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 106115588 + ... + 106117584.

Almost surely, 2^211914822242 is an apocalyptic number.

211914822242 is a deficient number, since it is larger than the sum of its proper divisors (108079749151).

211914822242 is an frugal number, since it uses more digits than its factorization.

211914822242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322 (or 2162 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The spelling of 211914822242 in words is "two hundred eleven billion, nine hundred fourteen million, eight hundred twenty-two thousand, two hundred forty-two".