1211243114042 has 24 divisors (see below), whose sum is σ = 2009233221696. Its totient is φ = 547140908496.

The previous prime is 1211243114041. The next prime is 1211243114051. The reversal of 1211243114042 is 2404113421121.

It is a super-2 number, since 2×1211243114042² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1211243114041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38107088 + ... + 38138859.

It is an arithmetic number, because the mean of its divisors is an integer number (83718050904).

Almost surely, 2^{1211243114042} is an apocalyptic number.

1211243114042 is a deficient number, since it is larger than the sum of its proper divisors (797990107654).

1211243114042 is a wasteful number, since it uses less digits than its factorization.

1211243114042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76246022 (or 76246009 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 1211243114042 its reverse (2404113421121), we get a palindrome (3615356535163).

The spelling of 1211243114042 in words is "one trillion, two hundred eleven billion, two hundred forty-three million, one hundred fourteen thousand, forty-two".