102111210000221 has 8 divisors (see below), whose sum is σ = 102491319924000. Its totient is φ = 101731103886960.

The previous prime is 102111210000199. The next prime is 102111210000259. The reversal of 102111210000221 is 122000012111201.

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-102111210000221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102111210000196 and 102111210000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111210000281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59981186 + ... + 61660076.

It is an arithmetic number, because the mean of its divisors is an integer number (12811414990500).

Almost surely, 2^{102111210000221} is an apocalyptic number.

It is an amenable number.

102111210000221 is a deficient number, since it is larger than the sum of its proper divisors (380109923779).

102111210000221 is a wasteful number, since it uses less digits than its factorization.

102111210000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905259.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102111210000221 its reverse (122000012111201), we get a palindrome (224111222111422).

The spelling of 102111210000221 in words is "one hundred two trillion, one hundred eleven billion, two hundred ten million, two hundred twenty-one", and thus it is an aban number.