221110121002 has 16 divisors (see below), whose sum is σ = 356931866952. Its totient is φ = 102346053120.

The previous prime is 221110120969. The next prime is 221110121033. The reversal of 221110121002 is 200121011122.

221110121002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 90023401521 + 131086719481 = 300039^2 + 362059^2 .

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 7 ways as a sum of consecutive naturals, for example, 53303163 + ... + 53307310.

Almost surely, 2^221110121002 is an apocalyptic number.

221110121002 is a deficient number, since it is larger than the sum of its proper divisors (135821745950).

221110121002 is a wasteful number, since it uses less digits than its factorization.

221110121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106610553.

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

Adding to 221110121002 its reverse (200121011122), we get a palindrome (421231132124).

The spelling of 221110121002 in words is "two hundred twenty-one billion, one hundred ten million, one hundred twenty-one thousand, two".