211031021211 has 16 divisors (see below), whose sum is σ = 302007333024. Its totient is φ = 130597761024.

The previous prime is 211031021209. The next prime is 211031021221. The reversal of 211031021211 is 112120130112.

It is not a de Polignac number, because 211031021211 - 2¹ = 211031021209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211031021221) 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, 28337806 + ... + 28345251.

It is an arithmetic number, because the mean of its divisors is an integer number (18875458314).

Almost surely, 2^211031021211 is an apocalyptic number.

211031021211 is a deficient number, since it is larger than the sum of its proper divisors (90976311813).

211031021211 is a wasteful number, since it uses less digits than its factorization.

211031021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56683150.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 211031021211 its reverse (112120130112), we get a palindrome (323151151323).

The spelling of 211031021211 in words is "two hundred eleven billion, thirty-one million, twenty-one thousand, two hundred eleven".