212233653 has 6 divisors (see below), whose sum is σ = 306559734. Its totient is φ = 141489096.

The previous prime is 212233649. The next prime is 212233691. The reversal of 212233653 is 356332212.

212233653 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 3 + 653 = 666.

It can be written as a sum of positive squares in only one way, i.e., 204432804 + 7800849 = 14298^2 + 2793^2 .

It is not a de Polignac number, because 212233653 - 2² = 212233649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212232653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11790750 + ... + 11790767.

It is an arithmetic number, because the mean of its divisors is an integer number (51093289).

Almost surely, 2^212233653 is an apocalyptic number.

It is an amenable number.

212233653 is a deficient number, since it is larger than the sum of its proper divisors (94326081).

212233653 is a wasteful number, since it uses less digits than its factorization.

212233653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23581523 (or 23581520 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 212233653 is about 14568.2412459432. The cubic root of 212233653 is about 596.4921735554.

Adding to 212233653 its reverse (356332212), we get a palindrome (568565865).

The spelling of 212233653 in words is "two hundred twelve million, two hundred thirty-three thousand, six hundred fifty-three".