1021600011 has 4 divisors (see below), whose sum is σ = 1362133352. Its totient is φ = 681066672.

The previous prime is 1021599991. The next prime is 1021600049. The reversal of 1021600011 is 1100061201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1021600011 - 2⁹ = 1021599499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021600011.

It is not an unprimeable number, because it can be changed into a prime (1021600061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170266666 + ... + 170266671.

It is an arithmetic number, because the mean of its divisors is an integer number (340533338).

Almost surely, 2^1021600011 is an apocalyptic number.

1021600011 is a deficient number, since it is larger than the sum of its proper divisors (340533341).

1021600011 is an equidigital number, since it uses as much as digits as its factorization.

1021600011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340533340.

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

The square root of 1021600011 is about 31962.4781736335. The cubic root of 1021600011 is about 1007.1487768764.

Adding to 1021600011 its reverse (1100061201), we get a palindrome (2121661212).

The spelling of 1021600011 in words is "one billion, twenty-one million, six hundred thousand, eleven".