221110110000002 has 4 divisors (see below), whose sum is σ = 331665165000006. Its totient is φ = 110555055000000.

The previous prime is 221110109999963. The next prime is 221110110000007. The reversal of 221110110000002 is 200000011011122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 116887429479601 + 104222680520401 = 10811449^2 + 10208951^2 .

It is not an unprimeable number, because it can be changed into a prime (221110110000007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55277527499999 + ... + 55277527500002.

Almost surely, 2^{221110110000002} is an apocalyptic number.

221110110000002 is a deficient number, since it is larger than the sum of its proper divisors (110555055000004).

221110110000002 is a wasteful number, since it uses less digits than its factorization.

221110110000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110555055000003.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221110110000002 its reverse (200000011011122), we get a palindrome (421110121011124).

The spelling of 221110110000002 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred ten million, two", and thus it is an aban number.