221111202012 has 48 divisors (see below), whose sum is σ = 516846919680. Its totient is φ = 73572282432.

The previous prime is 221111201959. The next prime is 221111202019. The reversal of 221111202012 is 210202111122.

221111202012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221111201982 and 221111202000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111202019) by changing a digit.

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, 34604914 + ... + 34611302.

It is an arithmetic number, because the mean of its divisors is an integer number (10767644160).

Almost surely, 2^221111202012 is an apocalyptic number.

It is an amenable number.

221111202012 is an abundant number, since it is smaller than the sum of its proper divisors (295735717668).

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

221111202012 is a wasteful number, since it uses less digits than its factorization.

221111202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11090 (or 11088 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221111202012 its reverse (210202111122), we get a palindrome (431313313134).

The spelling of 221111202012 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred two thousand, twelve".