201231231033021 has 32 divisors (see below), whose sum is σ = 306929743411200. Its totient is φ = 114879903289920.

The previous prime is 201231231032957. The next prime is 201231231033031. The reversal of 201231231033021 is 120330132132102.

201231231033021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201231231033021 - 2⁶ = 201231231032957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201231231032982 and 201231231033000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201231231033031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 741241335 + ... + 741512763.

It is an arithmetic number, because the mean of its divisors is an integer number (9591554481600).

Almost surely, 2^{201231231033021} is an apocalyptic number.

201231231033021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201231231033021 is a deficient number, since it is larger than the sum of its proper divisors (105698512378179).

201231231033021 is a wasteful number, since it uses less digits than its factorization.

201231231033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304889.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 201231231033021 its reverse (120330132132102), we get a palindrome (321561363165123).

The spelling of 201231231033021 in words is "two hundred one trillion, two hundred thirty-one billion, two hundred thirty-one million, thirty-three thousand, twenty-one".