20000202111 has 12 divisors (see below), whose sum is σ = 29669969992. Its totient is φ = 12973103856.

The previous prime is 20000202091. The next prime is 20000202121. The reversal of 20000202111 is 11120200002.

It is not a de Polignac number, because 20000202111 - 2¹⁹ = 19999677823 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 = 20000202093 and 20000202102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000202121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30030001 + ... + 30030666.

Almost surely, 2^20000202111 is an apocalyptic number.

20000202111 is a deficient number, since it is larger than the sum of its proper divisors (9669767881).

20000202111 is a wasteful number, since it uses less digits than its factorization.

20000202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60060710 (or 60060707 counting only the distinct ones).

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

Adding to 20000202111 its reverse (11120200002), we get a palindrome (31120402113).

It can be divided in two parts, 20000 and 202111, that added together give a triangular number (222111 = T₆₆₆).

The spelling of 20000202111 in words is "twenty billion, two hundred two thousand, one hundred eleven".