212100201222 has 64 divisors (see below), whose sum is σ = 524173192704. Its totient is φ = 55715616000.

The previous prime is 212100201211. The next prime is 212100201311. The reversal of 212100201222 is 222102001212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636783 + ... + 910874.

It is an arithmetic number, because the mean of its divisors is an integer number (8190206136).

Almost surely, 2^212100201222 is an apocalyptic number.

212100201222 is an abundant number, since it is smaller than the sum of its proper divisors (312072991482).

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

212100201222 is a wasteful number, since it uses less digits than its factorization.

212100201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547933.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212100201222 its reverse (222102001212), we get a palindrome (434202202434).

The spelling of 212100201222 in words is "two hundred twelve billion, one hundred million, two hundred one thousand, two hundred twenty-two".