1201121033331 has 4 divisors (see below), whose sum is σ = 1601494711112. Its totient is φ = 800747355552.

The previous prime is 1201121033311. The next prime is 1201121033369. The reversal of 1201121033331 is 1333301211021.

It is a happy number.

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

It is not a de Polignac number, because 1201121033331 - 2¹¹ = 1201121031283 is a prime.

It is a super-2 number, since 2×1201121033331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201121033298 and 1201121033307.

It is not an unprimeable number, because it can be changed into a prime (1201121033311) 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, 200186838886 + ... + 200186838891.

It is an arithmetic number, because the mean of its divisors is an integer number (400373677778).

Almost surely, 2^{1201121033331} is an apocalyptic number.

1201121033331 is a deficient number, since it is larger than the sum of its proper divisors (400373677781).

1201121033331 is an equidigital number, since it uses as much as digits as its factorization.

1201121033331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400373677780.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1201121033331 its reverse (1333301211021), we get a palindrome (2534422244352).

The spelling of 1201121033331 in words is "one trillion, two hundred one billion, one hundred twenty-one million, thirty-three thousand, three hundred thirty-one".