212111221002 has 8 divisors (see below), whose sum is σ = 424222442016. Its totient is φ = 70703740332.

The previous prime is 212111221001. The next prime is 212111221037. The reversal of 212111221002 is 200122111212.

It is a sphenic number, since it is the product of 3 distinct primes.

212111221002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (212111221001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17675935078 + ... + 17675935089.

It is an arithmetic number, because the mean of its divisors is an integer number (53027805252).

Almost surely, 2^212111221002 is an apocalyptic number.

212111221002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212111221002 is a wasteful number, since it uses less digits than its factorization.

212111221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35351870172.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212111221002 its reverse (200122111212), we get a palindrome (412233332214).

The spelling of 212111221002 in words is "two hundred twelve billion, one hundred eleven million, two hundred twenty-one thousand, two".