121002121002111 has 8 divisors (see below), whose sum is σ = 161337446454144. Its totient is φ = 80667438109080.

The previous prime is 121002121002107. The next prime is 121002121002151. The reversal of 121002121002111 is 111200121200121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121002121002111 - 2² = 121002121002107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002121002151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160200181 + ... + 160953726.

It is an arithmetic number, because the mean of its divisors is an integer number (20167180806768).

Almost surely, 2^{121002121002111} is an apocalyptic number.

121002121002111 is a deficient number, since it is larger than the sum of its proper divisors (40335325452033).

121002121002111 is a wasteful number, since it uses less digits than its factorization.

121002121002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321279501.

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

Adding to 121002121002111 its reverse (111200121200121), we get a palindrome (232202242202232).

The spelling of 121002121002111 in words is "one hundred twenty-one trillion, two billion, one hundred twenty-one million, two thousand, one hundred eleven".