212221102010 has 8 divisors (see below), whose sum is σ = 381997983636. Its totient is φ = 84888440800.

The previous prime is 212221102007. The next prime is 212221102019. The reversal of 212221102010 is 10201122212.

It can be written as a sum of positive squares in 2 ways, for example, as 206618429809 + 5602672201 = 454553^2 + 74851^2 .

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

It is a super-2 number, since 2×212221102010² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212221102019) 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, 10611055091 + ... + 10611055110.

Almost surely, 2^212221102010 is an apocalyptic number.

212221102010 is a deficient number, since it is larger than the sum of its proper divisors (169776881626).

212221102010 is a wasteful number, since it uses less digits than its factorization.

212221102010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21222110208.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212221102010 its reverse (10201122212), we get a palindrome (222422224222).

The spelling of 212221102010 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred two thousand, ten".