211020213 has 16 divisors (see below), whose sum is σ = 304176320. Its totient is φ = 129672576.

The previous prime is 211020163. The next prime is 211020233. The reversal of 211020213 is 312020112.

It is not a de Polignac number, because 211020213 - 2⁶ = 211020149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020233) 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, 47920 + ... + 52137.

It is an arithmetic number, because the mean of its divisors is an integer number (19011020).

Almost surely, 2^211020213 is an apocalyptic number.

It is an amenable number.

211020213 is a deficient number, since it is larger than the sum of its proper divisors (93156107).

211020213 is a wasteful number, since it uses less digits than its factorization.

211020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100116.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 211020213 is about 14526.5347898251. The cubic root of 211020213 is about 595.3531909594.

Adding to 211020213 its reverse (312020112), we get a palindrome (523040325).

The spelling of 211020213 in words is "two hundred eleven million, twenty thousand, two hundred thirteen".