211031022130 has 8 divisors (see below), whose sum is σ = 379855839852. Its totient is φ = 84412408848.

The previous prime is 211031022091. The next prime is 211031022131. The reversal of 211031022130 is 31220130112.

It can be written as a sum of positive squares in 2 ways, for example, as 208082857921 + 2948164209 = 456161^2 + 54297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (211031022131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10551551097 + ... + 10551551116.

Almost surely, 2^211031022130 is an apocalyptic number.

211031022130 is a deficient number, since it is larger than the sum of its proper divisors (168824817722).

211031022130 is a wasteful number, since it uses less digits than its factorization.

211031022130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21103102220.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 211031022130 its reverse (31220130112), we get a palindrome (242251152242).

The spelling of 211031022130 in words is "two hundred eleven billion, thirty-one million, twenty-two thousand, one hundred thirty".