221100210010012 has 6 divisors (see below), whose sum is σ = 386925367517528. Its totient is φ = 110550105005004.

The previous prime is 221100210009949. The next prime is 221100210010061. The reversal of 221100210010012 is 210010012001122.

It is a junction number, because it is equal to n+sod(n) for n = 221100210009974 and 221100210010001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27637526251248 + ... + 27637526251255.

Almost surely, 2^{221100210010012} is an apocalyptic number.

It is an amenable number.

221100210010012 is a deficient number, since it is larger than the sum of its proper divisors (165825157507516).

221100210010012 is a wasteful number, since it uses less digits than its factorization.

221100210010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55275052502507 (or 55275052502505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221100210010012 its reverse (210010012001122), we get a palindrome (431110222011134).

The spelling of 221100210010012 in words is "two hundred twenty-one trillion, one hundred billion, two hundred ten million, ten thousand, twelve".