211161084290 has 32 divisors (see below), whose sum is σ = 409469664240. Its totient is φ = 77940117504.

The previous prime is 211161084241. The next prime is 211161084293. The reversal of 211161084290 is 92480161112.

It can be written as a sum of positive squares in 8 ways, for example, as 3399239809 + 207761844481 = 58303^2 + 455809^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211161084290.

It is not an unprimeable number, because it can be changed into a prime (211161084293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96266 + ... + 656954.

Almost surely, 2^211161084290 is an apocalyptic number.

211161084290 is a deficient number, since it is larger than the sum of its proper divisors (198308579950).

211161084290 is a wasteful number, since it uses less digits than its factorization.

211161084290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563606.

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 211161084290 in words is "two hundred eleven billion, one hundred sixty-one million, eighty-four thousand, two hundred ninety".