204222131101 has 4 divisors (see below), whose sum is σ = 205280277052. Its totient is φ = 203163985152.

The previous prime is 204222131063. The next prime is 204222131107. The reversal of 204222131101 is 101131222402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48296655225 + 155925475876 = 219765^2 + 394874^2 .

It is a cyclic number.

It is not a de Polignac number, because 204222131101 - 2⁹ = 204222130589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204222131107) 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, 529072686 + ... + 529073071.

It is an arithmetic number, because the mean of its divisors is an integer number (51320069263).

Almost surely, 2^204222131101 is an apocalyptic number.

It is an amenable number.

204222131101 is a deficient number, since it is larger than the sum of its proper divisors (1058145951).

204222131101 is a wasteful number, since it uses less digits than its factorization.

204222131101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058145950.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 204222131101 its reverse (101131222402), we get a palindrome (305353353503).

The spelling of 204222131101 in words is "two hundred four billion, two hundred twenty-two million, one hundred thirty-one thousand, one hundred one".