211422935378 has 6 divisors (see below), whose sum is σ = 317135378469. Its totient is φ = 105711142556.

The previous prime is 211422935357. The next prime is 211422935387. The reversal of 211422935378 is 873539224112.

It can be written as a sum of positive squares in 2 ways, for example, as 185996400529 + 25426534849 = 431273^2 + 159457^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=325133.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 487700 + ... + 812832.

Almost surely, 2^211422935378 is an apocalyptic number.

211422935378 is a deficient number, since it is larger than the sum of its proper divisors (105712443091).

211422935378 is an frugal number, since it uses more digits than its factorization.

211422935378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650268 (or 325135 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The spelling of 211422935378 in words is "two hundred eleven billion, four hundred twenty-two million, nine hundred thirty-five thousand, three hundred seventy-eight".