20120200011 has 24 divisors (see below), whose sum is σ = 30179735040. Its totient is φ = 13395293352.

The previous prime is 20120199991. The next prime is 20120200033. The reversal of 20120200011 is 11000202102.

It is not a de Polignac number, because 20120200011 - 2⁶ = 20120199947 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 20120199966 and 20120200002.

It is not an unprimeable number, because it can be changed into a prime (20120200211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124830 + ... + 236268.

It is an arithmetic number, because the mean of its divisors is an integer number (1257488960).

Almost surely, 2^20120200011 is an apocalyptic number.

20120200011 is a deficient number, since it is larger than the sum of its proper divisors (10059535029).

20120200011 is an equidigital number, since it uses as much as digits as its factorization.

20120200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112197 (or 112185 counting only the distinct ones).

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

Adding to 20120200011 its reverse (11000202102), we get a palindrome (31120402113).

The spelling of 20120200011 in words is "twenty billion, one hundred twenty million, two hundred thousand, eleven".