211213052 has 6 divisors (see below), whose sum is σ = 369622848. Its totient is φ = 105606524.

The previous prime is 211213043. The next prime is 211213069. The reversal of 211213052 is 250312112.

It is a happy number.

It is a super-2 number, since 2×211213052² = 89221906670309408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211213052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26401628 + ... + 26401635.

It is an arithmetic number, because the mean of its divisors is an integer number (61603808).

Almost surely, 2^211213052 is an apocalyptic number.

It is an amenable number.

211213052 is a deficient number, since it is larger than the sum of its proper divisors (158409796).

211213052 is a wasteful number, since it uses less digits than its factorization.

211213052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52803267 (or 52803265 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 211213052 is about 14533.1707483261. The cubic root of 211213052 is about 595.5344885362.

Adding to 211213052 its reverse (250312112), we get a palindrome (461525164).

The spelling of 211213052 in words is "two hundred eleven million, two hundred thirteen thousand, fifty-two".