221012210012 has 48 divisors (see below), whose sum is σ = 448277149152. Its totient is φ = 94227886080.

The previous prime is 221012209973. The next prime is 221012210021. The reversal of 221012210012 is 210012210122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285053 + ... + 723380.

It is an arithmetic number, because the mean of its divisors is an integer number (9339107274).

Almost surely, 2^221012210012 is an apocalyptic number.

221012210012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221012210012 is an abundant number, since it is smaller than the sum of its proper divisors (227264939140).

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

221012210012 is a wasteful number, since it uses less digits than its factorization.

221012210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008758 (or 1008756 counting only the distinct ones).

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

Adding to 221012210012 its reverse (210012210122), we get a palindrome (431024420134).

The spelling of 221012210012 in words is "two hundred twenty-one billion, twelve million, two hundred ten thousand, twelve".