221212242010 has 32 divisors (see below), whose sum is σ = 402134533632. Its totient is φ = 87606935040.

The previous prime is 221212242007. The next prime is 221212242019. The reversal of 221212242010 is 10242212122.

It is not an unprimeable number, because it can be changed into a prime (221212242019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5367402 + ... + 5408458.

It is an arithmetic number, because the mean of its divisors is an integer number (12566704176).

Almost surely, 2^221212242010 is an apocalyptic number.

221212242010 is a deficient number, since it is larger than the sum of its proper divisors (180922291622).

221212242010 is a wasteful number, since it uses less digits than its factorization.

221212242010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46398.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221212242010 its reverse (10242212122), we get a palindrome (231454454132).

The spelling of 221212242010 in words is "two hundred twenty-one billion, two hundred twelve million, two hundred forty-two thousand, ten".