1100020102001 has 4 divisors (see below), whose sum is σ = 1103343425904. Its totient is φ = 1096696778100.

The previous prime is 1100020101997. The next prime is 1100020102009. The reversal of 1100020102001 is 1002010200011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100020102001 - 2² = 1100020101997 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 1100020102001.

It is not an unprimeable number, because it can be changed into a prime (1100020102009) 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, 1661661455 + ... + 1661662116.

It is an arithmetic number, because the mean of its divisors is an integer number (275835856476).

Almost surely, 2^{1100020102001} is an apocalyptic number.

It is an amenable number.

1100020102001 is a deficient number, since it is larger than the sum of its proper divisors (3323323903).

1100020102001 is an equidigital number, since it uses as much as digits as its factorization.

1100020102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323323902.

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

Adding to 1100020102001 its reverse (1002010200011), we get a palindrome (2102030302012).

It can be divided in two parts, 1100020 and 102001, that added together give a palindrome (1202021).

The spelling of 1100020102001 in words is "one trillion, one hundred billion, twenty million, one hundred two thousand, one".