211532116 has 12 divisors (see below), whose sum is σ = 377166132. Its totient is φ = 103770368.

The previous prime is 211532107. The next prime is 211532137. The reversal of 211532116 is 611235112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165019716 + 46512400 = 12846^2 + 6820^2 .

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, 498685 + ... + 499108.

It is an arithmetic number, because the mean of its divisors is an integer number (31430511).

Almost surely, 2^211532116 is an apocalyptic number.

It is an amenable number.

211532116 is a deficient number, since it is larger than the sum of its proper divisors (165634016).

211532116 is a wasteful number, since it uses less digits than its factorization.

211532116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997850 (or 997848 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

The square root of 211532116 is about 14544.1437011603. The cubic root of 211532116 is about 595.8342143575.

Adding to 211532116 its reverse (611235112), we get a palindrome (822767228).

It can be divided in two parts, 2115 and 32116, that multiplied together give a triangular number (67925340 = T₁₁₆₅₅).

The spelling of 211532116 in words is "two hundred eleven million, five hundred thirty-two thousand, one hundred sixteen".