1211402104423 has 32 divisors (see below), whose sum is σ = 1496309760000. Its totient is φ = 976942092672.

The previous prime is 1211402104421. The next prime is 1211402104427. The reversal of 1211402104423 is 3244012041121.

It is not a de Polignac number, because 1211402104423 - 2¹ = 1211402104421 is a prime.

It is a super-3 number, since 3×1211402104423³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211402104421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18433978 + ... + 18499576.

It is an arithmetic number, because the mean of its divisors is an integer number (46759680000).

Almost surely, 2^{1211402104423} is an apocalyptic number.

1211402104423 is a deficient number, since it is larger than the sum of its proper divisors (284907655577).

1211402104423 is an equidigital number, since it uses as much as digits as its factorization.

1211402104423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68804 (or 68790 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1211402104423 its reverse (3244012041121), we get a palindrome (4455414145544).

The spelling of 1211402104423 in words is "one trillion, two hundred eleven billion, four hundred two million, one hundred four thousand, four hundred twenty-three".