1211403341121 has 16 divisors (see below), whose sum is σ = 1643147320320. Its totient is φ = 793640236880.

The previous prime is 1211403341107. The next prime is 1211403341143. The reversal of 1211403341121 is 1211433041121.

It is a cyclic number.

It is not a de Polignac number, because 1211403341121 - 2¹¹ = 1211403339073 is a prime.

It is a super-3 number, since 3×1211403341121³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1211403341091 and 1211403341100.

It is not an unprimeable number, because it can be changed into a prime (1211403341021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664965 + ... + 1692626.

It is an arithmetic number, because the mean of its divisors is an integer number (102696707520).

Almost surely, 2^{1211403341121} is an apocalyptic number.

It is an amenable number.

1211403341121 is a deficient number, since it is larger than the sum of its proper divisors (431743979199).

1211403341121 is a wasteful number, since it uses less digits than its factorization.

1211403341121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360556.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 1211403341121 its reverse (1211433041121), we get a palindrome (2422836382242).

The spelling of 1211403341121 in words is "one trillion, two hundred eleven billion, four hundred three million, three hundred forty-one thousand, one hundred twenty-one".