1102001000021 has 8 divisors (see below), whose sum is σ = 1108427328000. Its totient is φ = 1095575320432.

The previous prime is 1102000999993. The next prime is 1102001000033. The reversal of 1102001000021 is 1200001002011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102001000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102000999972 and 1102001000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102001000041) 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, 3485480 + ... + 3788478.

It is an arithmetic number, because the mean of its divisors is an integer number (138553416000).

Almost surely, 2^{1102001000021} is an apocalyptic number.

It is an amenable number.

1102001000021 is a deficient number, since it is larger than the sum of its proper divisors (6426327979).

1102001000021 is a wasteful number, since it uses less digits than its factorization.

1102001000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324195.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1102001000021 its reverse (1200001002011), we get a palindrome (2302002002032).

The spelling of 1102001000021 in words is "one trillion, one hundred two billion, one million, twenty-one", and thus it is an aban number.