121211002112111 has 8 divisors (see below), whose sum is σ = 121269180065904. Its totient is φ = 121152830803840.

The previous prime is 121211002112059. The next prime is 121211002112171. The reversal of 121211002112111 is 111211200112121.

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-121211002112111 is a prime.

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 121211002112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211002112171) 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, 35020556 + ... + 38325726.

It is an arithmetic number, because the mean of its divisors is an integer number (15158647508238).

Almost surely, 2^{121211002112111} is an apocalyptic number.

121211002112111 is a deficient number, since it is larger than the sum of its proper divisors (58177953793).

121211002112111 is a wasteful number, since it uses less digits than its factorization.

121211002112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322761.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121211002112111 its reverse (111211200112121), we get a palindrome (232422202224232).

The spelling of 121211002112111 in words is "one hundred twenty-one trillion, two hundred eleven billion, two million, one hundred twelve thousand, one hundred eleven".