20020200111 has 16 divisors (see below), whose sum is σ = 29661735520. Its totient is φ = 13345819200.

The previous prime is 20020200097. The next prime is 20020200121. The reversal of 20020200111 is 11100202002.

It is not a de Polignac number, because 20020200111 - 2¹⁸ = 20019937967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020200093 and 20020200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020200121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695811 + ... + 724011.

It is an arithmetic number, because the mean of its divisors is an integer number (1853858470).

Almost surely, 2^20020200111 is an apocalyptic number.

20020200111 is a deficient number, since it is larger than the sum of its proper divisors (9641535409).

20020200111 is a wasteful number, since it uses less digits than its factorization.

20020200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54503 (or 54497 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20020200111 its reverse (11100202002), we get a palindrome (31120402113).

The spelling of 20020200111 in words is "twenty billion, twenty million, two hundred thousand, one hundred eleven".