201231020100012 has 48 divisors (see below), whose sum is σ = 540712359382272. Its totient is φ = 57055687266240.

The previous prime is 201231020099999. The next prime is 201231020100101. The reversal of 201231020100012 is 210001020132102.

It is a junction number, because it is equal to n+sod(n) for n = 201231020099964 and 201231020100000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9143528623 + ... + 9143550630.

It is an arithmetic number, because the mean of its divisors is an integer number (11264840820464).

Almost surely, 2^{201231020100012} is an apocalyptic number.

It is an amenable number.

201231020100012 is an abundant number, since it is smaller than the sum of its proper divisors (339481339282260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201231020100012 is a wasteful number, since it uses less digits than its factorization.

201231020100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18287079398 (or 18287079396 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201231020100012 its reverse (210001020132102), we get a palindrome (411232040232114).

The spelling of 201231020100012 in words is "two hundred one trillion, two hundred thirty-one billion, twenty million, one hundred thousand, twelve".