1000011100021 has 8 divisors (see below), whose sum is σ = 1054804758080. Its totient is φ = 945433591488.

The previous prime is 1000011100007. The next prime is 1000011100091. The reversal of 1000011100021 is 1200011100001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000011100021 - 2¹⁷ = 1000010968949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000011099977 and 1000011100013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000011100091) 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, 54027876 + ... + 54046381.

It is an arithmetic number, because the mean of its divisors is an integer number (131850594760).

Almost surely, 2^{1000011100021} is an apocalyptic number.

It is an amenable number.

1000011100021 is a deficient number, since it is larger than the sum of its proper divisors (54793658059).

1000011100021 is a wasteful number, since it uses less digits than its factorization.

1000011100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108074763.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 1000011100021 its reverse (1200011100001), we get a palindrome (2200022200022).

The spelling of 1000011100021 in words is "one trillion, eleven million, one hundred thousand, twenty-one".