20331042102 has 48 divisors (see below), whose sum is σ = 50406014880. Its totient is φ = 5801659776.

The previous prime is 20331042097. The next prime is 20331042143. The reversal of 20331042102 is 20124013302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2208 + ... + 201660.

It is an arithmetic number, because the mean of its divisors is an integer number (1050125310).

Almost surely, 2^20331042102 is an apocalyptic number.

20331042102 is an abundant number, since it is smaller than the sum of its proper divisors (30074972778).

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

20331042102 is a wasteful number, since it uses less digits than its factorization.

20331042102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200277 (or 200274 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20331042102 its reverse (20124013302), we get a palindrome (40455055404).

The spelling of 20331042102 in words is "twenty billion, three hundred thirty-one million, forty-two thousand, one hundred two".