221200211021012 has 12 divisors (see below), whose sum is σ = 387100588015680. Its totient is φ = 110600043016536.

The previous prime is 221200211021003. The next prime is 221200211021047. The reversal of 221200211021012 is 210120112002122.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7148738 + ... + 22214969.

It is an arithmetic number, because the mean of its divisors is an integer number (32258382334640).

Almost surely, 2^{221200211021012} is an apocalyptic number.

It is an amenable number.

221200211021012 is a deficient number, since it is larger than the sum of its proper divisors (165900376994668).

221200211021012 is a wasteful number, since it uses less digits than its factorization.

221200211021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31246990 (or 31246988 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221200211021012 its reverse (210120112002122), we get a palindrome (431320323023134).

The spelling of 221200211021012 in words is "two hundred twenty-one trillion, two hundred billion, two hundred eleven million, twenty-one thousand, twelve".