200111111020 has 48 divisors (see below), whose sum is σ = 428478579648. Its totient is φ = 78476153600.

The previous prime is 200111111017. The next prime is 200111111051. The reversal of 200111111020 is 20111111002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 200111110988 and 200111111006.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1379970 + ... + 1518070.

It is an arithmetic number, because the mean of its divisors is an integer number (8926637076).

Almost surely, 2^200111111020 is an apocalyptic number.

200111111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200111111020 is an abundant number, since it is smaller than the sum of its proper divisors (228367468628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200111111020 is a wasteful number, since it uses less digits than its factorization.

200111111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139530 (or 139528 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 200111111020 its reverse (20111111002), we get a palindrome (220222222022).

The spelling of 200111111020 in words is "two hundred billion, one hundred eleven million, one hundred eleven thousand, twenty".