102020212212221 has 8 divisors (see below), whose sum is σ = 106068821241600. Its totient is φ = 98018955335520.

The previous prime is 102020212212137. The next prime is 102020212212251. The reversal of 102020212212221 is 122212212020201.

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-102020212212221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102020212212193 and 102020212212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020212212251) 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, 11838033776 + ... + 11838042393.

It is an arithmetic number, because the mean of its divisors is an integer number (13258602655200).

Almost surely, 2^{102020212212221} is an apocalyptic number.

It is an amenable number.

102020212212221 is a deficient number, since it is larger than the sum of its proper divisors (4048609029379).

102020212212221 is a wasteful number, since it uses less digits than its factorization.

102020212212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23676076339.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 102020212212221 its reverse (122212212020201), we get a palindrome (224232424232422).

The spelling of 102020212212221 in words is "one hundred two trillion, twenty billion, two hundred twelve million, two hundred twelve thousand, two hundred twenty-one".