120102010000021 has 16 divisors (see below), whose sum is σ = 137715767322624. Its totient is φ = 102602899746864.

The previous prime is 120102009999973. The next prime is 120102010000061. The reversal of 120102010000021 is 120000010201021.

It is a cyclic number.

It is not a de Polignac number, because 120102010000021 - 2²⁹ = 120101473129109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120102009999962 and 120102010000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102010000061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21001185 + ... + 26100838.

It is an arithmetic number, because the mean of its divisors is an integer number (8607235457664).

Almost surely, 2^{120102010000021} is an apocalyptic number.

It is an amenable number.

120102010000021 is a deficient number, since it is larger than the sum of its proper divisors (17613757322603).

120102010000021 is an equidigital number, since it uses as much as digits as its factorization.

120102010000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47103240.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120102010000021 its reverse (120000010201021), we get a palindrome (240102020201042).

The spelling of 120102010000021 in words is "one hundred twenty trillion, one hundred two billion, ten million, twenty-one", and thus it is an aban number.