212201144 has 8 divisors (see below), whose sum is σ = 397877160. Its totient is φ = 106100568.

The previous prime is 212201137. The next prime is 212201147. The reversal of 212201144 is 441102212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13262564 + ... + 13262579.

It is an arithmetic number, because the mean of its divisors is an integer number (49734645).

Almost surely, 2^212201144 is an apocalyptic number.

It is an amenable number.

212201144 is a deficient number, since it is larger than the sum of its proper divisors (185676016).

212201144 is a wasteful number, since it uses less digits than its factorization.

212201144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26525149 (or 26525145 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 212201144 is about 14567.1254542549. The cubic root of 212201144 is about 596.4617160007.

Adding to 212201144 its reverse (441102212), we get a palindrome (653303356).

The spelling of 212201144 in words is "two hundred twelve million, two hundred one thousand, one hundred forty-four".