1211402041121 has 16 divisors (see below), whose sum is σ = 1239549376320. Its totient is φ = 1183633651200.

The previous prime is 1211402041067. The next prime is 1211402041141.

1211402041121 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1211402041121 - 2¹⁰ = 1211402040097 is a prime.

It is a super-3 number, since 3×1211402041121³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211402041093 and 1211402041102.

It is not an unprimeable number, because it can be changed into a prime (1211402041141) 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, 3660110 + ... + 3977336.

It is an arithmetic number, because the mean of its divisors is an integer number (77471836020).

Almost surely, 2^{1211402041121} is an apocalyptic number.

It is an amenable number.

1211402041121 is a deficient number, since it is larger than the sum of its proper divisors (28147335199).

1211402041121 is a wasteful number, since it uses less digits than its factorization.

1211402041121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317824.

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 1211402041121 in words is "one trillion, two hundred eleven billion, four hundred two million, forty-one thousand, one hundred twenty-one".