1201543233331 has 16 divisors (see below), whose sum is σ = 1392085954048. Its totient is φ = 1015725614400.

The previous prime is 1201543233311. The next prime is 1201543233337. The reversal of 1201543233331 is 1333323451021.

It is a happy number.

It is not a de Polignac number, because 1201543233331 - 2¹³ = 1201543225139 is a prime.

It is a super-2 number, since 2×1201543233331² (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 = 1201543233293 and 1201543233302.

It is not an unprimeable number, because it can be changed into a prime (1201543233337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9920146 + ... + 10040536.

It is an arithmetic number, because the mean of its divisors is an integer number (87005372128).

Almost surely, 2^{1201543233331} is an apocalyptic number.

1201543233331 is a deficient number, since it is larger than the sum of its proper divisors (190542720717).

1201543233331 is a wasteful number, since it uses less digits than its factorization.

1201543233331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140002.

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 1201543233331 its reverse (1333323451021), we get a palindrome (2534866684352).

The spelling of 1201543233331 in words is "one trillion, two hundred one billion, five hundred forty-three million, two hundred thirty-three thousand, three hundred thirty-one".