101440012102 has 24 divisors (see below), whose sum is σ = 179743632120. Its totient is φ = 42562241280.

The previous prime is 101440012067. The next prime is 101440012103. The reversal of 101440012102 is 201210044101.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101440012103) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 13638027 + ... + 13645462.

It is an arithmetic number, because the mean of its divisors is an integer number (7489318005).

Almost surely, 2^101440012102 is an apocalyptic number.

101440012102 is a deficient number, since it is larger than the sum of its proper divisors (78303620018).

101440012102 is a wasteful number, since it uses less digits than its factorization.

101440012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27283528 (or 27283515 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101440012102 its reverse (201210044101), we get a palindrome (302650056203).

The spelling of 101440012102 in words is "one hundred one billion, four hundred forty million, twelve thousand, one hundred two".