20021300102 has 4 divisors (see below), whose sum is σ = 30031950156. Its totient is φ = 10010650050.

The previous prime is 20021300083. The next prime is 20021300119. The reversal of 20021300102 is 20100312002.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005325024 + ... + 5005325027.

It is an arithmetic number, because the mean of its divisors is an integer number (7507987539).

Almost surely, 2^20021300102 is an apocalyptic number.

20021300102 is a deficient number, since it is larger than the sum of its proper divisors (10010650054).

20021300102 is a wasteful number, since it uses less digits than its factorization.

20021300102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010650053.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20021300102 its reverse (20100312002), we get a palindrome (40121612104).

The spelling of 20021300102 in words is "twenty billion, twenty-one million, three hundred thousand, one hundred two".