212663144 has 16 divisors (see below), whose sum is σ = 401133600. Its totient is φ = 105694192.

The previous prime is 212663137. The next prime is 212663147. The reversal of 212663144 is 441366212.

It is a super-2 number, since 2×212663144² = 90451225631929472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212663147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78254 + ... + 80925.

It is an arithmetic number, because the mean of its divisors is an integer number (25070850).

Almost surely, 2^212663144 is an apocalyptic number.

It is an amenable number.

212663144 is a deficient number, since it is larger than the sum of its proper divisors (188470456).

212663144 is a wasteful number, since it uses less digits than its factorization.

212663144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159352 (or 159348 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 212663144 is about 14582.9744565366. The cubic root of 212663144 is about 596.8942703280.

The spelling of 212663144 in words is "two hundred twelve million, six hundred sixty-three thousand, one hundred forty-four".