211242152 has 32 divisors (see below), whose sum is σ = 454831200. Its totient is φ = 90964800.

The previous prime is 211242137. The next prime is 211242173. The reversal of 211242152 is 251242112.

It is a super-2 number, since 2×211242152² = 89246493563182208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61499 + ... + 64842.

It is an arithmetic number, because the mean of its divisors is an integer number (14213475).

Almost surely, 2^211242152 is an apocalyptic number.

211242152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211242152 is an abundant number, since it is smaller than the sum of its proper divisors (243589048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211242152 is a wasteful number, since it uses less digits than its factorization.

211242152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126377 (or 126373 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 211242152 is about 14534.1718718336. The cubic root of 211242152 is about 595.5618373161.

Adding to 211242152 its reverse (251242112), we get a palindrome (462484264).

The spelling of 211242152 in words is "two hundred eleven million, two hundred forty-two thousand, one hundred fifty-two".