102020110200221 has 4 divisors (see below), whose sum is σ = 106455767165472. Its totient is φ = 97584453234972.

The previous prime is 102020110200209. The next prime is 102020110200251. The reversal of 102020110200221 is 122002011020201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 102020110200221 - 2³⁴ = 102002930331037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102020110200196 and 102020110200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020110200251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217828482591 + ... + 2217828482636.

It is an arithmetic number, because the mean of its divisors is an integer number (26613941791368).

Almost surely, 2^{102020110200221} is an apocalyptic number.

It is an amenable number.

102020110200221 is a deficient number, since it is larger than the sum of its proper divisors (4435656965251).

102020110200221 is an equidigital number, since it uses as much as digits as its factorization.

102020110200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435656965250.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102020110200221 its reverse (122002011020201), we get a palindrome (224022121220422).

The spelling of 102020110200221 in words is "one hundred two trillion, twenty billion, one hundred ten million, two hundred thousand, two hundred twenty-one".