20221020020002 has 4 divisors (see below), whose sum is σ = 30331530030006. Its totient is φ = 10110510010000.

The previous prime is 20221020019969. The next prime is 20221020020029. The reversal of 20221020020002 is 20002002012202.

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., 13542098241681 + 6678921778321 = 3679959^2 + 2584361^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 5055255004999 + ... + 5055255005002.

Almost surely, 2^{20221020020002} is an apocalyptic number.

20221020020002 is a deficient number, since it is larger than the sum of its proper divisors (10110510010004).

20221020020002 is a wasteful number, since it uses less digits than its factorization.

20221020020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110510010003.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20221020020002 its reverse (20002002012202), we get a palindrome (40223022032204).

The spelling of 20221020020002 in words is "twenty trillion, two hundred twenty-one billion, twenty million, twenty thousand, two".