1021200011 has 8 divisors (see below), whose sum is σ = 1157635920. Its totient is φ = 893032992.

The previous prime is 1021199983. The next prime is 1021200017. The reversal of 1021200011 is 1100021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021200011 - 2⁶ = 1021199947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021200017) 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 7 ways as a sum of consecutive naturals, for example, 2066960 + ... + 2067453.

It is an arithmetic number, because the mean of its divisors is an integer number (144704490).

Almost surely, 2^1021200011 is an apocalyptic number.

1021200011 is a deficient number, since it is larger than the sum of its proper divisors (136435909).

1021200011 is a wasteful number, since it uses less digits than its factorization.

1021200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134445.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1021200011 is about 31956.2202239251. The cubic root of 1021200011 is about 1007.0173124752.

Adding to 1021200011 its reverse (1100021201), we get a palindrome (2121221212).

The spelling of 1021200011 in words is "one billion, twenty-one million, two hundred thousand, eleven".