1100020001021 has 8 divisors (see below), whose sum is σ = 1115601372288. Its totient is φ = 1084441078000.

The previous prime is 1100020000987. The next prime is 1100020001033. The reversal of 1100020001021 is 1201000200011.

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

It is not a de Polignac number, because 1100020001021 - 2¹⁸ = 1100019738877 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 (1100020001071) 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, 302531 + ... + 1513791.

It is an arithmetic number, because the mean of its divisors is an integer number (139450171536).

Almost surely, 2^{1100020001021} is an apocalyptic number.

It is an amenable number.

1100020001021 is a deficient number, since it is larger than the sum of its proper divisors (15581371267).

1100020001021 is a wasteful number, since it uses less digits than its factorization.

1100020001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224123.

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

Adding to 1100020001021 its reverse (1201000200011), we get a palindrome (2301020201032).

The spelling of 1100020001021 in words is "one trillion, one hundred billion, twenty million, one thousand, twenty-one".