20202101020 has 12 divisors (see below), whose sum is σ = 42424412184. Its totient is φ = 8080840400.

The previous prime is 20202100979. The next prime is 20202101041. The reversal of 20202101020 is 2010120202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20202100988 and 20202101006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505052506 + ... + 505052545.

It is an arithmetic number, because the mean of its divisors is an integer number (3535367682).

Almost surely, 2^20202101020 is an apocalyptic number.

20202101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202101020 is an abundant number, since it is smaller than the sum of its proper divisors (22222311164).

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

20202101020 is a wasteful number, since it uses less digits than its factorization.

20202101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010105060 (or 1010105058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20202101020 its reverse (2010120202), we get a palindrome (22212221222).

The spelling of 20202101020 in words is "twenty billion, two hundred two million, one hundred one thousand, twenty".