1002101200221 has 24 divisors (see below), whose sum is σ = 1471564221120. Its totient is φ = 606126526720.

The previous prime is 1002101200213. The next prime is 1002101200241. The reversal of 1002101200221 is 1220021012001.

It is not a de Polignac number, because 1002101200221 - 2³ = 1002101200213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002101200197 and 1002101200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002101200241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2561556 + ... + 2926733.

It is an arithmetic number, because the mean of its divisors is an integer number (61315175880).

Almost surely, 2^{1002101200221} is an apocalyptic number.

1002101200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002101200221 is a deficient number, since it is larger than the sum of its proper divisors (469463020899).

1002101200221 is a wasteful number, since it uses less digits than its factorization.

1002101200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5488817 (or 5488806 counting only the distinct ones).

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

Adding to 1002101200221 its reverse (1220021012001), we get a palindrome (2222122212222).

The spelling of 1002101200221 in words is "one trillion, two billion, one hundred one million, two hundred thousand, two hundred twenty-one".