211020212 has 12 divisors (see below), whose sum is σ = 397692036. Its totient is φ = 97393920.

The previous prime is 211020163. The next prime is 211020233. The reversal of 211020212 is 212020112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 121793296 + 89226916 = 11036^2 + 9446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211020193 and 211020202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2028989 + ... + 2029092.

It is an arithmetic number, because the mean of its divisors is an integer number (33141003).

Almost surely, 2^211020212 is an apocalyptic number.

It is an amenable number.

211020212 is a deficient number, since it is larger than the sum of its proper divisors (186671824).

211020212 is a wasteful number, since it uses less digits than its factorization.

211020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4058098 (or 4058096 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 211020212 is about 14526.5347554054. The cubic root of 211020212 is about 595.3531900189.

Adding to 211020212 its reverse (212020112), we get a palindrome (423040324).

It can be divided in two parts, 2110 and 20212, that added together give a palindrome (22322).

The spelling of 211020212 in words is "two hundred eleven million, twenty thousand, two hundred twelve".