1020204111 has 16 divisors (see below), whose sum is σ = 1394328320. Its totient is φ = 663163200.

The previous prime is 1020204103. The next prime is 1020204151. The reversal of 1020204111 is 1114020201.

It is a happy number.

It is not a de Polignac number, because 1020204111 - 2³ = 1020204103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020204151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70950 + ... + 84108.

It is an arithmetic number, because the mean of its divisors is an integer number (87145520).

Almost surely, 2^1020204111 is an apocalyptic number.

1020204111 is a deficient number, since it is larger than the sum of its proper divisors (374124209).

1020204111 is a wasteful number, since it uses less digits than its factorization.

1020204111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13806.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1020204111 is about 31940.6341671545. The cubic root of 1020204111 is about 1006.6898497772.

Adding to 1020204111 its reverse (1114020201), we get a palindrome (2134224312).

The spelling of 1020204111 in words is "one billion, twenty million, two hundred four thousand, one hundred eleven".