1002123320221 has 8 divisors (see below), whose sum is σ = 1007862235200. Its totient is φ = 996391436832.

The previous prime is 1002123320161. The next prime is 1002123320267. The reversal of 1002123320221 is 1220233212001.

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 1002123320221 - 2¹⁷ = 1002123189149 is a prime.

It is a super-2 number, since 2×1002123320221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002123320021) 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, 1471915 + ... + 2042248.

It is an arithmetic number, because the mean of its divisors is an integer number (125982779400).

Almost surely, 2^{1002123320221} is an apocalyptic number.

It is an amenable number.

1002123320221 is a deficient number, since it is larger than the sum of its proper divisors (5738914979).

1002123320221 is a wasteful number, since it uses less digits than its factorization.

1002123320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515795.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1002123320221 its reverse (1220233212001), we get a palindrome (2222356532222).

The spelling of 1002123320221 in words is "one trillion, two billion, one hundred twenty-three million, three hundred twenty thousand, two hundred twenty-one".