221022010212 has 24 divisors (see below), whose sum is σ = 533501404800. Its totient is φ = 71133520416.

The previous prime is 221022010211. The next prime is 221022010219. The reversal of 221022010212 is 212010220122.

It is a junction number, because it is equal to n+sod(n) for n = 221022010191 and 221022010200.

It is not an unprimeable number, because it can be changed into a prime (221022010211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317560012 + ... + 317560707.

It is an arithmetic number, because the mean of its divisors is an integer number (22229225200).

Almost surely, 2^221022010212 is an apocalyptic number.

It is an amenable number.

221022010212 is an abundant number, since it is smaller than the sum of its proper divisors (312479394588).

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

221022010212 is a wasteful number, since it uses less digits than its factorization.

221022010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635120755 (or 635120753 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221022010212 its reverse (212010220122), we get a palindrome (433032230334).

The spelling of 221022010212 in words is "two hundred twenty-one billion, twenty-two million, ten thousand, two hundred twelve".