212151650 has 24 divisors (see below), whose sum is σ = 395348580. Its totient is φ = 84700160.

The previous prime is 212151649. The next prime is 212151661. The reversal of 212151650 is 56151212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 26020201 + 186131449 = 5101^2 + 13643^2 .

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 11 ways as a sum of consecutive naturals, for example, 24722 + ... + 32178.

Almost surely, 2^212151650 is an apocalyptic number.

212151650 is a deficient number, since it is larger than the sum of its proper divisors (183196930).

212151650 is a wasteful number, since it uses less digits than its factorization.

212151650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8038 (or 8033 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 212151650 is about 14565.4265299716. The cubic root of 212151650 is about 596.4153392925.

The spelling of 212151650 in words is "two hundred twelve million, one hundred fifty-one thousand, six hundred fifty".