102002211101221 has 16 divisors (see below), whose sum is σ = 105407359510528. Its totient is φ = 98604283100400.

The previous prime is 102002211101171. The next prime is 102002211101257. The reversal of 102002211101221 is 122101112200201.

It is a cyclic number.

It is not a de Polignac number, because 102002211101221 - 2²⁷ = 102002076883493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102002211101195 and 102002211101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002211101621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127147066 + ... + 127946788.

It is an arithmetic number, because the mean of its divisors is an integer number (6587959969408).

Almost surely, 2^{102002211101221} is an apocalyptic number.

It is an amenable number.

102002211101221 is a deficient number, since it is larger than the sum of its proper divisors (3405148409307).

102002211101221 is a wasteful number, since it uses less digits than its factorization.

102002211101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804232.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102002211101221 its reverse (122101112200201), we get a palindrome (224103323301422).

The spelling of 102002211101221 in words is "one hundred two trillion, two billion, two hundred eleven million, one hundred one thousand, two hundred twenty-one".