10102120000021 has 8 divisors (see below), whose sum is σ = 11548157001984. Its totient is φ = 8656802248560.

The previous prime is 10102120000001. The next prime is 10102120000039. The reversal of 10102120000021 is 12000002120101.

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 10102120000021 - 2⁵ = 10102119999989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102119999962 and 10102120000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102120000001) 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, 179782525 + ... + 179838706.

It is an arithmetic number, because the mean of its divisors is an integer number (1443519625248).

Almost surely, 2^{10102120000021} is an apocalyptic number.

It is an amenable number.

10102120000021 is a deficient number, since it is larger than the sum of its proper divisors (1446037001963).

10102120000021 is an equidigital number, since it uses as much as digits as its factorization.

10102120000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359625251.

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

Adding to 10102120000021 its reverse (12000002120101), we get a palindrome (22102122120122).

The spelling of 10102120000021 in words is "ten trillion, one hundred two billion, one hundred twenty million, twenty-one", and thus it is an aban number.