221210212010 has 8 divisors (see below), whose sum is σ = 398178381636. Its totient is φ = 88484084800.

The previous prime is 221210212007. The next prime is 221210212031. The reversal of 221210212010 is 10212012122.

221210212010 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 198886565089 + 22323646921 = 445967^2 + 149411^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11060510591 + ... + 11060510610.

Almost surely, 2^221210212010 is an apocalyptic number.

221210212010 is a deficient number, since it is larger than the sum of its proper divisors (176968169626).

221210212010 is a wasteful number, since it uses less digits than its factorization.

221210212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22121021208.

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

Adding to 221210212010 its reverse (10212012122), we get a palindrome (231422224132).

The spelling of 221210212010 in words is "two hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, ten".