20020210120 has 64 divisors (see below), whose sum is σ = 46315897200. Its totient is φ = 7782727680.

The previous prime is 20020209973. The next prime is 20020210127. The reversal of 20020210120 is 2101202002.

It can be written as a sum of positive squares in 8 ways, for example, as 11203375716 + 8816834404 = 105846^2 + 93898^2 .

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 = 20020210097 and 20020210106.

It is not an unprimeable number, because it can be changed into a prime (20020210127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1367640 + ... + 1382200.

Almost surely, 2^20020210120 is an apocalyptic number.

20020210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020210120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23157948600).

20020210120 is an abundant number, since it is smaller than the sum of its proper divisors (26295687080).

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

20020210120 is a wasteful number, since it uses less digits than its factorization.

20020210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15538 (or 15534 counting only the distinct ones).

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

Adding to 20020210120 its reverse (2101202002), we get a palindrome (22121412122).

The spelling of 20020210120 in words is "twenty billion, twenty million, two hundred ten thousand, one hundred twenty".