1110010020021 has 32 divisors (see below), whose sum is σ = 1884420721920. Its totient is φ = 632590886592.

The previous prime is 1110010019959. The next prime is 1110010020103. The reversal of 1110010020021 is 1200200100111.

It is a happy number.

It is not a de Polignac number, because 1110010020021 - 2¹³ = 1110010011829 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1110010019985 and 1110010020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110010020121) 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, 7802250 + ... + 7943243.

It is an arithmetic number, because the mean of its divisors is an integer number (58888147560).

Almost surely, 2^{1110010020021} is an apocalyptic number.

It is an amenable number.

1110010020021 is a deficient number, since it is larger than the sum of its proper divisors (774410701899).

1110010020021 is a wasteful number, since it uses less digits than its factorization.

1110010020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15745882 (or 15745876 counting only the distinct ones).

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

Adding to 1110010020021 its reverse (1200200100111), we get a palindrome (2310210120132).

The spelling of 1110010020021 in words is "one trillion, one hundred ten billion, ten million, twenty thousand, twenty-one".