212221201000 has 64 divisors (see below), whose sum is σ = 503592111360. Its totient is φ = 83692840000.

The previous prime is 212221200991. The next prime is 212221201007. The reversal of 212221201000 is 102122212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212221201007) 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, 1423516 + ... + 1565515.

It is an arithmetic number, because the mean of its divisors is an integer number (7868626740).

Almost surely, 2^212221201000 is an apocalyptic number.

212221201000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221201000 is an abundant number, since it is smaller than the sum of its proper divisors (291370910360).

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

212221201000 is a wasteful number, since it uses less digits than its factorization.

212221201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989123 (or 2989109 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212221201000 its reverse (102122212), we get a palindrome (212323323212).

The spelling of 212221201000 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred one thousand".