20101100102 has 8 divisors (see below), whose sum is σ = 31462591536. Its totient is φ = 9613569592.

The previous prime is 20101100099. The next prime is 20101100111. The reversal of 20101100102 is 20100110102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20101100102.

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 3 ways as a sum of consecutive naturals, for example, 218490173 + ... + 218490264.

It is an arithmetic number, because the mean of its divisors is an integer number (3932823942).

Almost surely, 2^20101100102 is an apocalyptic number.

20101100102 is a deficient number, since it is larger than the sum of its proper divisors (11361491434).

20101100102 is a wasteful number, since it uses less digits than its factorization.

20101100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436980462.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20101100102 its reverse (20100110102), we get a palindrome (40201210204).

The spelling of 20101100102 in words is "twenty billion, one hundred one million, one hundred thousand, one hundred two".