201231323121112 has 8 divisors (see below), whose sum is σ = 377308730852100. Its totient is φ = 100615661560552.

The previous prime is 201231323121083. The next prime is 201231323121121. The reversal of 201231323121112 is 211121323132102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12576957695062 + ... + 12576957695077.

Almost surely, 2^{201231323121112} is an apocalyptic number.

It is an amenable number.

201231323121112 is a deficient number, since it is larger than the sum of its proper divisors (176077407730988).

201231323121112 is a wasteful number, since it uses less digits than its factorization.

201231323121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25153915390145 (or 25153915390141 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 201231323121112 its reverse (211121323132102), we get a palindrome (412352646253214).

The spelling of 201231323121112 in words is "two hundred one trillion, two hundred thirty-one billion, three hundred twenty-three million, one hundred twenty-one thousand, one hundred twelve".