21001121000102 has 8 divisors (see below), whose sum is σ = 31506275611656. Its totient is φ = 10499029129552.

The previous prime is 21001121000009. The next prime is 21001121000107. The reversal of 21001121000102 is 20100012110012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001121000107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765668108 + ... + 765695535.

It is an arithmetic number, because the mean of its divisors is an integer number (3938284451457).

Almost surely, 2^{21001121000102} is an apocalyptic number.

21001121000102 is a deficient number, since it is larger than the sum of its proper divisors (10505154611554).

21001121000102 is a wasteful number, since it uses less digits than its factorization.

21001121000102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531370502.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21001121000102 its reverse (20100012110012), we get a palindrome (41101133110114).

The spelling of 21001121000102 in words is "twenty-one trillion, one billion, one hundred twenty-one million, one hundred two", and thus it is an aban number.