1010011100021 has 24 divisors (see below), whose sum is σ = 1299773407680. Its totient is φ = 775936795200.

The previous prime is 1010011100011. The next prime is 1010011100039. The reversal of 1010011100021 is 1200011100101.

It is a happy number.

It is not a de Polignac number, because 1010011100021 - 2³⁰ = 1008937358197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010011099981 and 1010011100008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010011100011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13157936 + ... + 13234473.

It is an arithmetic number, because the mean of its divisors is an integer number (54157225320).

Almost surely, 2^{1010011100021} is an apocalyptic number.

1010011100021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1010011100021 is a deficient number, since it is larger than the sum of its proper divisors (289762307659).

1010011100021 is a wasteful number, since it uses less digits than its factorization.

1010011100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26392505 (or 26392498 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1010011100021 its reverse (1200011100101), we get a palindrome (2210022200122).

The spelling of 1010011100021 in words is "one trillion, ten billion, eleven million, one hundred thousand, twenty-one".