201311033021 has 12 divisors (see below), whose sum is σ = 241732275840. Its totient is φ = 166986109080.

The previous prime is 201311032987. The next prime is 201311033081. The reversal of 201311033021 is 120330113102.

It is not a de Polignac number, because 201311033021 - 2⁶ = 201311032957 is a prime.

It is a super-2 number, since 2×201311033021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201311033081) 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 11 ways as a sum of consecutive naturals, for example, 66262811 + ... + 66265848.

It is an arithmetic number, because the mean of its divisors is an integer number (20144356320).

Almost surely, 2^201311033021 is an apocalyptic number.

It is an amenable number.

201311033021 is a deficient number, since it is larger than the sum of its proper divisors (40421242819).

201311033021 is a wasteful number, since it uses less digits than its factorization.

201311033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132528704 (or 132528697 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 201311033021 its reverse (120330113102), we get a palindrome (321641146123).

The spelling of 201311033021 in words is "two hundred one billion, three hundred eleven million, thirty-three thousand, twenty-one".