2104221020 has 96 divisors (see below), whose sum is σ = 4970972160. Its totient is φ = 741623040.

The previous prime is 2104221013. The next prime is 2104221023. The reversal of 2104221020 is 201224012.

It is a super-2 number, since 2×2104221020² = 8855492202019680800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2104220986 and 2104221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104221023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1126127 + ... + 1127993.

It is an arithmetic number, because the mean of its divisors is an integer number (51780960).

Almost surely, 2^2104221020 is an apocalyptic number.

2104221020 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 2104221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485486080).

2104221020 is an abundant number, since it is smaller than the sum of its proper divisors (2866751140).

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

2104221020 is a wasteful number, since it uses less digits than its factorization.

2104221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2104221020 is about 45871.7889339407. The cubic root of 2104221020 is about 1281.4365828770.

Adding to 2104221020 its reverse (201224012), we get a palindrome (2305445032).

The spelling of 2104221020 in words is "two billion, one hundred four million, two hundred twenty-one thousand, twenty".