20201010102 has 384 divisors, whose sum is σ = 59515223040. Its totient is φ = 4803701760.

The previous prime is 20201010091. The next prime is 20201010103. The reversal of 20201010102 is 20101010202.

It is a super-2 number, since 2×20201010102² (a number of 21 digits) contains 22 as substring.

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 (20201010103) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 61030077 + ... + 61030407.

It is an arithmetic number, because the mean of its divisors is an integer number (154987560).

Almost surely, 2^20201010102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20201010102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29757611520).

20201010102 is an abundant number, since it is smaller than the sum of its proper divisors (39314212938).

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

20201010102 is a wasteful number, since it uses less digits than its factorization.

20201010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 465 counting only the distinct ones).

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

Adding to 20201010102 its reverse (20101010202), we get a palindrome (40302020304).

The spelling of 20201010102 in words is "twenty billion, two hundred one million, ten thousand, one hundred two".