102102010221 has 8 divisors (see below), whose sum is σ = 136137729024. Its totient is φ = 68067149120.

The previous prime is 102102010207. The next prime is 102102010249. The reversal of 102102010221 is 122010201201.

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 102102010221 - 2¹³ = 102102002029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102102010197 and 102102010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102010271) 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, 153556 + ... + 477266.

It is an arithmetic number, because the mean of its divisors is an integer number (17017216128).

Almost surely, 2^102102010221 is an apocalyptic number.

It is an amenable number.

102102010221 is a deficient number, since it is larger than the sum of its proper divisors (34035718803).

102102010221 is a wasteful number, since it uses less digits than its factorization.

102102010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428851.

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

Adding to 102102010221 its reverse (122010201201), we get a palindrome (224112211422).

The spelling of 102102010221 in words is "one hundred two billion, one hundred two million, ten thousand, two hundred twenty-one".