212351272 has 64 divisors (see below), whose sum is σ = 478068480. Its totient is φ = 86456832.

The previous prime is 212351257. The next prime is 212351281. The reversal of 212351272 is 272153212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222348 + ... + 223300.

It is an arithmetic number, because the mean of its divisors is an integer number (7469820).

Almost surely, 2^212351272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212351272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239034240).

212351272 is an abundant number, since it is smaller than the sum of its proper divisors (265717208).

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

212351272 is a wasteful number, since it uses less digits than its factorization.

212351272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1158 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 212351272 is about 14572.2775158861. The cubic root of 212351272 is about 596.6023443591.

The spelling of 212351272 in words is "two hundred twelve million, three hundred fifty-one thousand, two hundred seventy-two".