1021100313011 has 4 divisors (see below), whose sum is σ = 1021180797000. Its totient is φ = 1021019829024.

The previous prime is 1021100312977. The next prime is 1021100313019. The reversal of 1021100313011 is 1103130011201.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021100313011 is a prime.

It is a super-2 number, since 2×1021100313011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021100313019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40222961 + ... + 40248338.

It is an arithmetic number, because the mean of its divisors is an integer number (255295199250).

Almost surely, 2^{1021100313011} is an apocalyptic number.

1021100313011 is a deficient number, since it is larger than the sum of its proper divisors (80483989).

1021100313011 is an equidigital number, since it uses as much as digits as its factorization.

1021100313011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80483988.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1021100313011 its reverse (1103130011201), we get a palindrome (2124230324212).

The spelling of 1021100313011 in words is "one trillion, twenty-one billion, one hundred million, three hundred thirteen thousand, eleven".