221012321034 has 32 divisors (see below), whose sum is σ = 447079296960. Its totient is φ = 72828657792.

The previous prime is 221012321011. The next prime is 221012321069. The reversal of 221012321034 is 430123210122.

221012321034 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221012321034.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2865297 + ... + 2941419.

It is an arithmetic number, because the mean of its divisors is an integer number (13971228030).

Almost surely, 2^221012321034 is an apocalyptic number.

221012321034 is an abundant number, since it is smaller than the sum of its proper divisors (226066975926).

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

221012321034 is a wasteful number, since it uses less digits than its factorization.

221012321034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81654.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221012321034 its reverse (430123210122), we get a palindrome (651135531156).

The spelling of 221012321034 in words is "two hundred twenty-one billion, twelve million, three hundred twenty-one thousand, thirty-four".