233131222021 has 8 divisors (see below), whose sum is σ = 235462471200. Its totient is φ = 230800424400.

The previous prime is 233131222007. The next prime is 233131222057. The reversal of 233131222021 is 120222131332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 233131222021 - 2⁹ = 233131221509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233131221983 and 233131222001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233131222081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977170 + ... + 1192108.

It is an arithmetic number, because the mean of its divisors is an integer number (29432808900).

Almost surely, 2^233131222021 is an apocalyptic number.

It is an amenable number.

233131222021 is a deficient number, since it is larger than the sum of its proper divisors (2331249179).

233131222021 is a wasteful number, since it uses less digits than its factorization.

233131222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225779.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 233131222021 its reverse (120222131332), we get a palindrome (353353353353).

The spelling of 233131222021 in words is "two hundred thirty-three billion, one hundred thirty-one million, two hundred twenty-two thousand, twenty-one".