221012011201012 has 12 divisors (see below), whose sum is σ = 409522256049060. Its totient is φ = 104005652329856.

The previous prime is 221012011200983. The next prime is 221012011201049. The reversal of 221012011201012 is 210102110210122.

It can be written as a sum of positive squares in 2 ways, for example, as 95546832337636 + 125465178863376 = 9774806^2 + 11201124^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625088317587 + ... + 1625088317722.

It is an arithmetic number, because the mean of its divisors is an integer number (34126854670755).

Almost surely, 2^{221012011201012} is an apocalyptic number.

It is an amenable number.

221012011201012 is a deficient number, since it is larger than the sum of its proper divisors (188510244848048).

221012011201012 is a wasteful number, since it uses less digits than its factorization.

221012011201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250176635330 (or 3250176635328 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221012011201012 its reverse (210102110210122), we get a palindrome (431114121411134).

The spelling of 221012011201012 in words is "two hundred twenty-one trillion, twelve billion, eleven million, two hundred one thousand, twelve".