1001020011101 has 8 divisors (see below), whose sum is σ = 1098560885184. Its totient is φ = 904568979520.

The previous prime is 1001020011077. The next prime is 1001020011157. The reversal of 1001020011101 is 1011100201001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001020011101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001020011191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272458700 + ... + 272462373.

It is an arithmetic number, because the mean of its divisors is an integer number (137320110648).

Almost surely, 2^{1001020011101} is an apocalyptic number.

1001020011101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001020011101 is a deficient number, since it is larger than the sum of its proper divisors (97540874083).

1001020011101 is a wasteful number, since it uses less digits than its factorization.

1001020011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544921251.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1001020011101 its reverse (1011100201001), we get a palindrome (2012120212102).

The spelling of 1001020011101 in words is "one trillion, one billion, twenty million, eleven thousand, one hundred one".