1002221121111 has 8 divisors (see below), whose sum is σ = 1527194089344. Its totient is φ = 572697783480.

The previous prime is 1002221121089. The next prime is 1002221121131. The reversal of 1002221121111 is 1111211222001.

It is a happy number.

1002221121111 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 not a de Polignac number, because 1002221121111 - 2⁹ = 1002221120599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002221121131) 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, 23862407625 + ... + 23862407666.

It is an arithmetic number, because the mean of its divisors is an integer number (190899261168).

Almost surely, 2^{1002221121111} is an apocalyptic number.

1002221121111 is a deficient number, since it is larger than the sum of its proper divisors (524972968233).

1002221121111 is an equidigital number, since it uses as much as digits as its factorization.

1002221121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47724815301.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1002221121111 its reverse (1111211222001), we get a palindrome (2113432343112).

The spelling of 1002221121111 in words is "one trillion, two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred eleven".