20021300101 has 4 divisors (see below), whose sum is σ = 21841418304. Its totient is φ = 18201181900.

The previous prime is 20021300083. The next prime is 20021300119. The reversal of 20021300101 is 10100312002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20021300083) and next prime (20021300119).

It is not a de Polignac number, because 20021300101 - 2⁷ = 20021299973 is a prime.

It is a super-2 number, since 2×20021300101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021000101) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 910059085 + ... + 910059106.

It is an arithmetic number, because the mean of its divisors is an integer number (5460354576).

Almost surely, 2^20021300101 is an apocalyptic number.

It is an amenable number.

20021300101 is a deficient number, since it is larger than the sum of its proper divisors (1820118203).

20021300101 is a wasteful number, since it uses less digits than its factorization.

20021300101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820118202.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20021300101 its reverse (10100312002), we get a palindrome (30121612103).

The spelling of 20021300101 in words is "twenty billion, twenty-one million, three hundred thousand, one hundred one".