212210101000 has 128 divisors (see below), whose sum is σ = 502620824160. Its totient is φ = 83853312000.

The previous prime is 212210100997. The next prime is 212210101001. The reversal of 212210101000 is 101012212.

It can be written as a sum of positive squares in 16 ways, for example, as 14908898404 + 197301202596 = 122102^2 + 444186^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (212210101001) 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, 62175294 + ... + 62178706.

Almost surely, 2^212210101000 is an apocalyptic number.

212210101000 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 212210101000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251310412080).

212210101000 is an abundant number, since it is smaller than the sum of its proper divisors (290410723160).

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

212210101000 is a wasteful number, since it uses less digits than its factorization.

212210101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172 (or 4158 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 212210101000 its reverse (101012212), we get a palindrome (212311113212).

The spelling of 212210101000 in words is "two hundred twelve billion, two hundred ten million, one hundred one thousand".