1201011122103 has 24 divisors (see below), whose sum is σ = 1747657893888. Its totient is φ = 733264170912.

The previous prime is 1201011122099. The next prime is 1201011122131. The reversal of 1201011122103 is 3012211101021.

It is not a de Polignac number, because 1201011122103 - 2² = 1201011122099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201011122203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9261825 + ... + 9390602.

It is an arithmetic number, because the mean of its divisors is an integer number (72819078912).

Almost surely, 2^{1201011122103} is an apocalyptic number.

1201011122103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201011122103 is a deficient number, since it is larger than the sum of its proper divisors (546646771785).

1201011122103 is a wasteful number, since it uses less digits than its factorization.

1201011122103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18652583 (or 18652570 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1201011122103 its reverse (3012211101021), we get a palindrome (4213222223124).

The spelling of 1201011122103 in words is "one trillion, two hundred one billion, eleven million, one hundred twenty-two thousand, one hundred three".