201216146444 has 12 divisors (see below), whose sum is σ = 352157962464. Its totient is φ = 100599585744.

The previous prime is 201216146441. The next prime is 201216146479. The reversal of 201216146444 is 444641612102.

It is not an unprimeable number, because it can be changed into a prime (201216146441) 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, 2068379 + ... + 2163474.

It is an arithmetic number, because the mean of its divisors is an integer number (29346496872).

Almost surely, 2^201216146444 is an apocalyptic number.

It is an amenable number.

201216146444 is a deficient number, since it is larger than the sum of its proper divisors (150941816020).

201216146444 is a wasteful number, since it uses less digits than its factorization.

201216146444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243744 (or 4243742 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

Adding to 201216146444 its reverse (444641612102), we get a palindrome (645857758546).

The spelling of 201216146444 in words is "two hundred one billion, two hundred sixteen million, one hundred forty-six thousand, four hundred forty-four".