102220020221 has 4 divisors (see below), whose sum is σ = 111512749344. Its totient is φ = 92927291100.

The previous prime is 102220020211. The next prime is 102220020271. The reversal of 102220020221 is 122020022201.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220020221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102220020196 and 102220020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220020211) 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, 4646364545 + ... + 4646364566.

It is an arithmetic number, because the mean of its divisors is an integer number (27878187336).

Almost surely, 2^102220020221 is an apocalyptic number.

102220020221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102220020221 is a deficient number, since it is larger than the sum of its proper divisors (9292729123).

102220020221 is an equidigital number, since it uses as much as digits as its factorization.

102220020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9292729122.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 102220020221 its reverse (122020022201), we get a palindrome (224240042422).

The spelling of 102220020221 in words is "one hundred two billion, two hundred twenty million, twenty thousand, two hundred twenty-one".