102020110221 has 16 divisors (see below), whose sum is σ = 140269768704. Its totient is φ = 65920028784.

The previous prime is 102020110217. The next prime is 102020110259. The reversal of 102020110221 is 122011020201.

It is not a de Polignac number, because 102020110221 - 2² = 102020110217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102020110197 and 102020110206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020110321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3497841 + ... + 3526886.

It is an arithmetic number, because the mean of its divisors is an integer number (8766860544).

Almost surely, 2^102020110221 is an apocalyptic number.

It is an amenable number.

102020110221 is a deficient number, since it is larger than the sum of its proper divisors (38249658483).

102020110221 is a wasteful number, since it uses less digits than its factorization.

102020110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7024880.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102020110221 its reverse (122011020201), we get a palindrome (224031130422).

The spelling of 102020110221 in words is "one hundred two billion, twenty million, one hundred ten thousand, two hundred twenty-one".