231002203223221 has 8 divisors (see below), whose sum is σ = 243162825162080. Its totient is φ = 218841842408688.

The previous prime is 231002203223203. The next prime is 231002203223261. The reversal of 231002203223221 is 122322302200132.

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 231002203223221 - 2¹³ = 231002203215029 is a prime.

It is a super-2 number, since 2×231002203223221² (a number of 30 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 (231002203223201) 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, 63463926 + ... + 67005031.

It is an arithmetic number, because the mean of its divisors is an integer number (30395353145260).

Almost surely, 2^{231002203223221} is an apocalyptic number.

It is an amenable number.

231002203223221 is a deficient number, since it is larger than the sum of its proper divisors (12160621938859).

231002203223221 is a wasteful number, since it uses less digits than its factorization.

231002203223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130562163.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 231002203223221 its reverse (122322302200132), we get a palindrome (353324505423353).

The spelling of 231002203223221 in words is "two hundred thirty-one trillion, two billion, two hundred three million, two hundred twenty-three thousand, two hundred twenty-one".