1100121331012 has 24 divisors (see below), whose sum is σ = 2101283493120. Its totient is φ = 499804707360.

The previous prime is 1100121331009. The next prime is 1100121331013. The reversal of 1100121331012 is 2101331210011.

It is a happy number.

It is a super-2 number, since 2×1100121331012² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1100121331013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6172212 + ... + 6347947.

It is an arithmetic number, because the mean of its divisors is an integer number (87553478880).

Almost surely, 2^{1100121331012} is an apocalyptic number.

It is an amenable number.

1100121331012 is a deficient number, since it is larger than the sum of its proper divisors (1001162162108).

1100121331012 is a wasteful number, since it uses less digits than its factorization.

1100121331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12522171 (or 12522169 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1100121331012 its reverse (2101331210011), we get a palindrome (3201452541023).

The spelling of 1100121331012 in words is "one trillion, one hundred billion, one hundred twenty-one million, three hundred thirty-one thousand, twelve".