1002111222121 has 8 divisors (see below), whose sum is σ = 1003961275520. Its totient is φ = 1000262075472.

The previous prime is 1002111222089. The next prime is 1002111222137. The reversal of 1002111222121 is 1212221112001.

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 1002111222121 - 2⁵ = 1002111222089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002111222095 and 1002111222104.

It is not an unprimeable number, because it can be changed into a prime (1002111228121) 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, 2005936 + ... + 2455198.

It is an arithmetic number, because the mean of its divisors is an integer number (125495159440).

Almost surely, 2^{1002111222121} is an apocalyptic number.

It is an amenable number.

1002111222121 is a deficient number, since it is larger than the sum of its proper divisors (1850053399).

1002111222121 is an equidigital number, since it uses as much as digits as its factorization.

1002111222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453375.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1002111222121 its reverse (1212221112001), we get a palindrome (2214332334122).

The spelling of 1002111222121 in words is "one trillion, two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".