1002120002221 has 16 divisors (see below), whose sum is σ = 1085693656320. Its totient is φ = 919489720320.

The previous prime is 1002120002189. The next prime is 1002120002269. The reversal of 1002120002221 is 1222000212001.

It is a happy number.

1002120002221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1002120002221 - 2⁵ = 1002120002189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002120002281) 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, 1106221 + ... + 1796653.

It is an arithmetic number, because the mean of its divisors is an integer number (67855853520).

Almost surely, 2^{1002120002221} is an apocalyptic number.

It is an amenable number.

1002120002221 is a deficient number, since it is larger than the sum of its proper divisors (83573654099).

1002120002221 is a wasteful number, since it uses less digits than its factorization.

1002120002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691116.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1002120002221 its reverse (1222000212001), we get a palindrome (2224120214222).

The spelling of 1002120002221 in words is "one trillion, two billion, one hundred twenty million, two thousand, two hundred twenty-one".