1201103001 has 24 divisors (see below), whose sum is σ = 2024964864. Its totient is φ = 671739840.

The previous prime is 1201102997. The next prime is 1201103011. The reversal of 1201103001 is 1003011021.

It is not a de Polignac number, because 1201103001 - 2² = 1201102997 is a prime.

It is a super-2 number, since 2×1201103001² = 2885296838022412002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1201103011) 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, 199860 + ... + 205781.

It is an arithmetic number, because the mean of its divisors is an integer number (84373536).

Almost surely, 2^1201103001 is an apocalyptic number.

It is an amenable number.

1201103001 is a deficient number, since it is larger than the sum of its proper divisors (823861863).

1201103001 is a wasteful number, since it uses less digits than its factorization.

1201103001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405701 (or 405698 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1201103001 is about 34656.9329427750. The cubic root of 1201103001 is about 1062.9840565506.

Adding to 1201103001 its reverse (1003011021), we get a palindrome (2204114022).

The spelling of 1201103001 in words is "one billion, two hundred one million, one hundred three thousand, one".