201000020102 has 16 divisors (see below), whose sum is σ = 344583281952. Its totient is φ = 86139911040.

The previous prime is 201000020099. The next prime is 201000020147. The reversal of 201000020102 is 201020000102.

It is a self number, because there is not a number n which added to its sum of digits gives 201000020102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205028 + ... + 666360.

It is an arithmetic number, because the mean of its divisors is an integer number (21536455122).

Almost surely, 2^201000020102 is an apocalyptic number.

201000020102 is a deficient number, since it is larger than the sum of its proper divisors (143583261850).

201000020102 is a wasteful number, since it uses less digits than its factorization.

201000020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492463.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 201000020102 its reverse (201020000102), we get a palindrome (402020020204).

The spelling of 201000020102 in words is "two hundred one billion, twenty thousand, one hundred two".