212220011000 has 64 divisors (see below), whose sum is σ = 518185961280. Its totient is φ = 81197212800.

The previous prime is 212220010963. The next prime is 212220011009. The reversal of 212220011000 is 110022212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220011009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4590479 + ... + 4636478.

It is an arithmetic number, because the mean of its divisors is an integer number (8096655645).

Almost surely, 2^212220011000 is an apocalyptic number.

212220011000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220011000 is an abundant number, since it is smaller than the sum of its proper divisors (305965950280).

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

212220011000 is a wasteful number, since it uses less digits than its factorization.

212220011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9227001 (or 9226987 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212220011000 its reverse (110022212), we get a palindrome (212330033212).

The spelling of 212220011000 in words is "two hundred twelve billion, two hundred twenty million, eleven thousand".