110001020010021 has 32 divisors (see below), whose sum is σ = 190576394961920. Its totient is φ = 61395918140592.

The previous prime is 110001020010019. The next prime is 110001020010029. The reversal of 110001020010021 is 120010020100011.

It is a happy number.

It is not a de Polignac number, because 110001020010021 - 2¹ = 110001020010019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110001020009985 and 110001020010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110001020010029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6767619535 + ... + 6767635788.

It is an arithmetic number, because the mean of its divisors is an integer number (5955512342560).

Almost surely, 2^{110001020010021} is an apocalyptic number.

It is an amenable number.

110001020010021 is a deficient number, since it is larger than the sum of its proper divisors (80575374951899).

110001020010021 is a wasteful number, since it uses less digits than its factorization.

110001020010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13535255382 (or 13535255376 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 110001020010021 its reverse (120010020100011), we get a palindrome (230011040110032).

The spelling of 110001020010021 in words is "one hundred ten trillion, one billion, twenty million, ten thousand, twenty-one".