204242001222031 has 4 divisors (see below), whose sum is σ = 205278762649752. Its totient is φ = 203205239794312.

The previous prime is 204242001221971. The next prime is 204242001222037. The reversal of 204242001222031 is 130222100242402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204242001222031 - 2¹³ = 204242001213839 is a prime.

It is a super-2 number, since 2×204242001222031² (a number of 29 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 = 204242001221987 and 204242001222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204242001222037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518380713565 + ... + 518380713958.

It is an arithmetic number, because the mean of its divisors is an integer number (51319690662438).

Almost surely, 2^{204242001222031} is an apocalyptic number.

204242001222031 is a deficient number, since it is larger than the sum of its proper divisors (1036761427721).

204242001222031 is a wasteful number, since it uses less digits than its factorization.

204242001222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036761427720.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 204242001222031 its reverse (130222100242402), we get a palindrome (334464101464433).

The spelling of 204242001222031 in words is "two hundred four trillion, two hundred forty-two billion, one million, two hundred twenty-two thousand, thirty-one".