110101002020021 has 16 divisors (see below), whose sum is σ = 115011143239680. Its totient is φ = 105201170954880.

The previous prime is 110101002019999. The next prime is 110101002020077. The reversal of 110101002020021 is 120020200101011.

It is not a de Polignac number, because 110101002020021 - 2²² = 110100997825717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110101002019984 and 110101002020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110101002020521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99985391 + ... + 101080563.

It is an arithmetic number, because the mean of its divisors is an integer number (7188196452480).

Almost surely, 2^{110101002020021} is an apocalyptic number.

It is an amenable number.

110101002020021 is a deficient number, since it is larger than the sum of its proper divisors (4910141219659).

110101002020021 is a wasteful number, since it uses less digits than its factorization.

110101002020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099876.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 110101002020021 its reverse (120020200101011), we get a palindrome (230121202121032).

The spelling of 110101002020021 in words is "one hundred ten trillion, one hundred one billion, two million, twenty thousand, twenty-one".