2211221002 has 4 divisors (see below), whose sum is σ = 3316831506. Its totient is φ = 1105610500.

The previous prime is 2211220997. The next prime is 2211221039. The reversal of 2211221002 is 2001221122.

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., 1656571401 + 554649601 = 40701^2 + 23551^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552805249 + ... + 552805252.

Almost surely, 2^2211221002 is an apocalyptic number.

2211221002 is a deficient number, since it is larger than the sum of its proper divisors (1105610504).

2211221002 is a wasteful number, since it uses less digits than its factorization.

2211221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105610503.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2211221002 is about 47023.6217448210. The cubic root of 2211221002 is about 1302.7989010003.

Adding to 2211221002 its reverse (2001221122), we get a palindrome (4212442124).

The spelling of 2211221002 in words is "two billion, two hundred eleven million, two hundred twenty-one thousand, two".