2122000000 has 112 divisors (see below), whose sum is σ = 5289190110. Its totient is φ = 848000000.

The previous prime is 2121999973. The next prime is 2122000019. The reversal of 2122000000 is 2212.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 960008256 + 1161991744 = 30984^2 + 34088^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1999470 + ... + 2000530.

Almost surely, 2^2122000000 is an apocalyptic number.

2122000000 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 2122000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2644595055).

2122000000 is an abundant number, since it is smaller than the sum of its proper divisors (3167190110).

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

2122000000 is an frugal number, since it uses more digits than its factorization.

2122000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 2122000000 is about 46065.1712251241. The cubic root of 2122000000 is about 1285.0355029631.

Adding to 2122000000 its reverse (2212), we get a palindrome (2122002212).

The spelling of 2122000000 in words is "two billion, one hundred twenty-two million", and thus it is an aban number.