20020101102 has 80 divisors (see below), whose sum is σ = 47543265792. Its totient is φ = 6274920960.

The previous prime is 20020101097. The next prime is 20020101107. The reversal of 20020101102 is 20110102002.

It is an interprime number because it is at equal distance from previous prime (20020101097) and next prime (20020101107).

It is a super-2 number, since 2×20020101102² (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 (20020101107) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3635283 + ... + 3640785.

Almost surely, 2^20020101102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020101102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23771632896).

20020101102 is an abundant number, since it is smaller than the sum of its proper divisors (27523164690).

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

20020101102 is a wasteful number, since it uses less digits than its factorization.

20020101102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6855 (or 6846 counting only the distinct ones).

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

Adding to 20020101102 its reverse (20110102002), we get a palindrome (40130203104).

The spelling of 20020101102 in words is "twenty billion, twenty million, one hundred one thousand, one hundred two".