20000212020 has 144 divisors (see below), whose sum is σ = 64299690000. Its totient is φ = 5014683648.

The previous prime is 20000211991. The next prime is 20000212031. The reversal of 20000212020 is 2021200002.

It can be written as a sum of positive squares in 8 ways, for example, as 2062431396 + 17937780624 = 45414^2 + 133932^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20000211993 and 20000212011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3819324 + ... + 3824556.

It is an arithmetic number, because the mean of its divisors is an integer number (446525625).

Almost surely, 2^20000212020 is an apocalyptic number.

20000212020 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 20000212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32149845000).

20000212020 is an abundant number, since it is smaller than the sum of its proper divisors (44299477980).

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

20000212020 is a wasteful number, since it uses less digits than its factorization.

20000212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514 (or 6509 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20000212020 its reverse (2021200002), we get a palindrome (22021412022).

The spelling of 20000212020 in words is "twenty billion, two hundred twelve thousand, twenty".