102201131221 has 8 divisors (see below), whose sum is σ = 116806415360. Its totient is φ = 87597127728.

The previous prime is 102201131177. The next prime is 102201131377. The reversal of 102201131221 is 122131102201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102201131221 - 2⁷ = 102201131093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102201131195 and 102201131204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201131621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142581 + ... + 474058.

It is an arithmetic number, because the mean of its divisors is an integer number (14600801920).

Almost surely, 2^102201131221 is an apocalyptic number.

It is an amenable number.

102201131221 is a deficient number, since it is larger than the sum of its proper divisors (14605284139).

102201131221 is an equidigital number, since it uses as much as digits as its factorization.

102201131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640323.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102201131221 its reverse (122131102201), we get a palindrome (224332233422).

The spelling of 102201131221 in words is "one hundred two billion, two hundred one million, one hundred thirty-one thousand, two hundred twenty-one".