20021300111 has 8 divisors (see below), whose sum is σ = 20894982480. Its totient is φ = 19159837312.

The previous prime is 20021300083. The next prime is 20021300119. The reversal of 20021300111 is 11100312002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021300111 is a prime.

It is a super-2 number, since 2×20021300111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20021300092 and 20021300101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021300119) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3051545 + ... + 3058098.

It is an arithmetic number, because the mean of its divisors is an integer number (2611872810).

Almost surely, 2^20021300111 is an apocalyptic number.

20021300111 is a deficient number, since it is larger than the sum of its proper divisors (873682369).

20021300111 is a wasteful number, since it uses less digits than its factorization.

20021300111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109785.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20021300111 its reverse (11100312002), we get a palindrome (31121612113).

The spelling of 20021300111 in words is "twenty billion, twenty-one million, three hundred thousand, one hundred eleven".