1211214121121 has 8 divisors (see below), whose sum is σ = 1276389226944. Its totient is φ = 1147081817200.

The previous prime is 1211214121081. The next prime is 1211214121147.

1211214121121 is nontrivially palindromic in base 10.

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-1211214121121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211214121093 and 1211214121102.

It is not an unprimeable number, because it can be changed into a prime (1211214121321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260698091 + ... + 260702736.

It is an arithmetic number, because the mean of its divisors is an integer number (159548653368).

Almost surely, 2^{1211214121121} is an apocalyptic number.

It is an amenable number.

1211214121121 is a deficient number, since it is larger than the sum of its proper divisors (65175105823).

1211214121121 is a wasteful number, since it uses less digits than its factorization.

1211214121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521400951.

The product of its digits is 64, while the sum is 20.

The spelling of 1211214121121 in words is "one trillion, two hundred eleven billion, two hundred fourteen million, one hundred twenty-one thousand, one hundred twenty-one".