102102201210221 has 4 divisors (see below), whose sum is σ = 102462986373792. Its totient is φ = 101741416046652.

The previous prime is 102102201210211. The next prime is 102102201210263. The reversal of 102102201210221 is 122012102201201.

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 not a de Polignac number, because 102102201210221 - 2⁴² = 97704154699117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102102201210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102201210211) 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, 180392581361 + ... + 180392581926.

It is an arithmetic number, because the mean of its divisors is an integer number (25615746593448).

Almost surely, 2^{102102201210221} is an apocalyptic number.

It is an amenable number.

102102201210221 is a deficient number, since it is larger than the sum of its proper divisors (360785163571).

102102201210221 is an equidigital number, since it uses as much as digits as its factorization.

102102201210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360785163570.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102102201210221 its reverse (122012102201201), we get a palindrome (224114303411422).

The spelling of 102102201210221 in words is "one hundred two trillion, one hundred two billion, two hundred one million, two hundred ten thousand, two hundred twenty-one".