20210010102 has 12 divisors (see below), whose sum is σ = 43788355260. Its totient is φ = 6736670028.

The previous prime is 20210010097. The next prime is 20210010109. The reversal of 20210010102 is 20101001202.

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 (20210010109) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 561389152 + ... + 561389187.

It is an arithmetic number, because the mean of its divisors is an integer number (3649029605).

Almost surely, 2^20210010102 is an apocalyptic number.

20210010102 is an abundant number, since it is smaller than the sum of its proper divisors (23578345158).

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

20210010102 is a wasteful number, since it uses less digits than its factorization.

20210010102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122778347 (or 1122778344 counting only the distinct ones).

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

Adding to 20210010102 its reverse (20101001202), we get a palindrome (40311011304).

The spelling of 20210010102 in words is "twenty billion, two hundred ten million, ten thousand, one hundred two".