212000000000 has 240 divisors, whose sum is σ = 539868108780. Its totient is φ = 83200000000.

The previous prime is 211999999979. The next prime is 212000000021. The reversal of 212000000000 is 212.

It is an interprime number because it is at equal distance from previous prime (211999999979) and next prime (212000000021).

It can be written as a sum of positive squares in 10 ways, for example, as 158901093376 + 53098906624 = 398624^2 + 230432^2 .

It is a Harshad number since it is a multiple of its sum of digits (5).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3999999974 + ... + 4000000026.

Almost surely, 2^212000000000 is an apocalyptic number.

212000000000 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 212000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269934054390).

212000000000 is an abundant number, since it is smaller than the sum of its proper divisors (327868108780).

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

212000000000 is an frugal number, since it uses more digits than its factorization.

212000000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

Adding to 212000000000 its reverse (212), we get a palindrome (212000000212).

212000000000 divided by its reverse (212) gives a 9-th power (1000000000 = 10⁹).

The spelling of 212000000000 in words is "two hundred twelve billion", and thus it is an aban number.