212221210202 has 16 divisors (see below), whose sum is σ = 318542353920. Its totient is φ = 106040455248.

The previous prime is 212221210199. The next prime is 212221210231. The reversal of 212221210202 is 202012122212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30677648 + ... + 30684564.

It is an arithmetic number, because the mean of its divisors is an integer number (19908897120).

Almost surely, 2^212221210202 is an apocalyptic number.

212221210202 is a deficient number, since it is larger than the sum of its proper divisors (106321143718).

212221210202 is a wasteful number, since it uses less digits than its factorization.

212221210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14845.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212221210202 its reverse (202012122212), we get a palindrome (414233332414).

The spelling of 212221210202 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred ten thousand, two hundred two".