102111012222221 has 8 divisors (see below), whose sum is σ = 102197254969920. Its totient is φ = 102024790378272.

The previous prime is 102111012222199. The next prime is 102111012222229. The reversal of 102111012222221 is 122222210111201.

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-102111012222221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102111012222193 and 102111012222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111012222229) 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, 4555550 + ... + 14999168.

It is an arithmetic number, because the mean of its divisors is an integer number (12774656871240).

Almost surely, 2^{102111012222221} is an apocalyptic number.

It is an amenable number.

102111012222221 is a deficient number, since it is larger than the sum of its proper divisors (86242747699).

102111012222221 is a wasteful number, since it uses less digits than its factorization.

102111012222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10451875.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102111012222221 its reverse (122222210111201), we get a palindrome (224333222333422).

The spelling of 102111012222221 in words is "one hundred two trillion, one hundred eleven billion, twelve million, two hundred twenty-two thousand, two hundred twenty-one".