201231002102 has 16 divisors (see below), whose sum is σ = 332993892672. Its totient is φ = 90610582080.

The previous prime is 201231002017. The next prime is 201231002113. The reversal of 201231002102 is 201200132102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94384958 + ... + 94387089.

It is an arithmetic number, because the mean of its divisors is an integer number (20812118292).

Almost surely, 2^201231002102 is an apocalyptic number.

201231002102 is a deficient number, since it is larger than the sum of its proper divisors (131762890570).

201231002102 is a wasteful number, since it uses less digits than its factorization.

201231002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188772103.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 201231002102 its reverse (201200132102), we get a palindrome (402431134204).

The spelling of 201231002102 in words is "two hundred one billion, two hundred thirty-one million, two thousand, one hundred two".