211210212021211 has 16 divisors (see below), whose sum is σ = 231455719823328. Its totient is φ = 191543387155200.

The previous prime is 211210212021169. The next prime is 211210212021223. The reversal of 211210212021211 is 112120212012112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211210212021211 - 2¹³ = 211210212013019 is a prime.

It is a super-2 number, since 2×211210212021211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211210212051211) 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, 154713205 + ... + 156072406.

It is an arithmetic number, because the mean of its divisors is an integer number (14465982488958).

Almost surely, 2^{211210212021211} is an apocalyptic number.

211210212021211 is a deficient number, since it is larger than the sum of its proper divisors (20245507802117).

211210212021211 is a wasteful number, since it uses less digits than its factorization.

211210212021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310786542.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211210212021211 its reverse (112120212012112), we get a palindrome (323330424033323).

Subtracting from 211210212021211 its reverse (112120212012112), we obtain a palindrome (99090000009099).

The spelling of 211210212021211 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twelve million, twenty-one thousand, two hundred eleven".