1021100100001 has 8 divisors (see below), whose sum is σ = 1029296940800. Its totient is φ = 1012924690128.

The previous prime is 1021100099989. The next prime is 1021100100011. The reversal of 1021100100001 is 1000010011201.

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-1021100100001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021100100011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5262051 + ... + 5452648.

It is an arithmetic number, because the mean of its divisors is an integer number (128662117600).

Almost surely, 2^{1021100100001} is an apocalyptic number.

It is an amenable number.

1021100100001 is a deficient number, since it is larger than the sum of its proper divisors (8196840799).

1021100100001 is a wasteful number, since it uses less digits than its factorization.

1021100100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10715463.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1021100100001 its reverse (1000010011201), we get a palindrome (2021110111202).

The spelling of 1021100100001 in words is "one trillion, twenty-one billion, one hundred million, one hundred thousand, one".