1201011021303 has 4 divisors (see below), whose sum is σ = 1601348028408. Its totient is φ = 800674014200.

The previous prime is 1201011021269. The next prime is 1201011021311. The reversal of 1201011021303 is 3031201101021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201011021303 - 2³⁰ = 1199937279479 is a prime.

It is a super-3 number, since 3×1201011021303³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201011021313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200168503548 + ... + 200168503553.

It is an arithmetic number, because the mean of its divisors is an integer number (400337007102).

Almost surely, 2^{1201011021303} is an apocalyptic number.

1201011021303 is a deficient number, since it is larger than the sum of its proper divisors (400337007105).

1201011021303 is an equidigital number, since it uses as much as digits as its factorization.

1201011021303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400337007104.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1201011021303 its reverse (3031201101021), we get a palindrome (4232212122324).

The spelling of 1201011021303 in words is "one trillion, two hundred one billion, eleven million, twenty-one thousand, three hundred three".