20102001102 has 24 divisors (see below), whose sum is σ = 45846669960. Its totient is φ = 6348000240.

The previous prime is 20102001037. The next prime is 20102001103. The reversal of 20102001102 is 20110020102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102001103) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 29388549 + ... + 29389232.

It is an arithmetic number, because the mean of its divisors is an integer number (1910277915).

Almost surely, 2^20102001102 is an apocalyptic number.

20102001102 is an abundant number, since it is smaller than the sum of its proper divisors (25744668858).

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

20102001102 is a wasteful number, since it uses less digits than its factorization.

20102001102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58777808 (or 58777805 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20102001102 its reverse (20110020102), we get a palindrome (40212021204).

The spelling of 20102001102 in words is "twenty billion, one hundred two million, one thousand, one hundred two".