102421202221 has 8 divisors (see below), whose sum is σ = 110334410144. Its totient is φ = 94512944880.

The previous prime is 102421202207. The next prime is 102421202239. The reversal of 102421202221 is 122202124201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102421202221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102421202201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194615 + ... + 1277476.

It is an arithmetic number, because the mean of its divisors is an integer number (13791801268).

Almost surely, 2^102421202221 is an apocalyptic number.

It is an amenable number.

102421202221 is a deficient number, since it is larger than the sum of its proper divisors (7913207923).

102421202221 is a wasteful number, since it uses less digits than its factorization.

102421202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475291.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 102421202221 its reverse (122202124201), we get a palindrome (224623326422).

The spelling of 102421202221 in words is "one hundred two billion, four hundred twenty-one million, two hundred two thousand, two hundred twenty-one".