1002212220221 has 8 divisors (see below), whose sum is σ = 1061195805504. Its totient is φ = 943231960000.

The previous prime is 1002212220203. The next prime is 1002212220223. The reversal of 1002212220221 is 1220222122001.

It is a happy number.

1002212220221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-1002212220221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002212220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002212220223) 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, 196865 + ... + 1429398.

It is an arithmetic number, because the mean of its divisors is an integer number (132649475688).

Almost surely, 2^{1002212220221} is an apocalyptic number.

It is an amenable number.

1002212220221 is a deficient number, since it is larger than the sum of its proper divisors (58983585283).

1002212220221 is a wasteful number, since it uses less digits than its factorization.

1002212220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662531.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1002212220221 its reverse (1220222122001), we get a palindrome (2222434342222).

The spelling of 1002212220221 in words is "one trillion, two billion, two hundred twelve million, two hundred twenty thousand, two hundred twenty-one".