221001102002 has 4 divisors (see below), whose sum is σ = 331501653006. Its totient is φ = 110500551000.

The previous prime is 221001101999. The next prime is 221001102071. The reversal of 221001102002 is 200201100122.

It is a happy number.

221001102002 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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., 119253499561 + 101747602441 = 345331^2 + 318979^2 .

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, 55250275499 + ... + 55250275502.

Almost surely, 2^221001102002 is an apocalyptic number.

221001102002 is a deficient number, since it is larger than the sum of its proper divisors (110500551004).

221001102002 is a wasteful number, since it uses less digits than its factorization.

221001102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110500551003.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221001102002 its reverse (200201100122), we get a palindrome (421202202124).

The spelling of 221001102002 in words is "two hundred twenty-one billion, one million, one hundred two thousand, two".