2211221012002 has 4 divisors (see below), whose sum is σ = 3316831518006. Its totient is φ = 1105610506000.

The previous prime is 2211221011981. The next prime is 2211221012053. The reversal of 2211221012002 is 2002101221122.

It is a happy number.

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., 1571139409401 + 640081602601 = 1253451^2 + 800051^2 .

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 as a sum of consecutive naturals, namely, 552805252999 + ... + 552805253002.

Almost surely, 2^{2211221012002} is an apocalyptic number.

2211221012002 is a deficient number, since it is larger than the sum of its proper divisors (1105610506004).

2211221012002 is a wasteful number, since it uses less digits than its factorization.

2211221012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105610506003.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211221012002 its reverse (2002101221122), we get a palindrome (4213322233124).

The spelling of 2211221012002 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, twelve thousand, two".