204021144102 has 32 divisors (see below), whose sum is σ = 409059237888. Its totient is φ = 67837756896.

The previous prime is 204021144091. The next prime is 204021144109. The reversal of 204021144102 is 201441120402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204021144109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4192603 + ... + 4240985.

It is an arithmetic number, because the mean of its divisors is an integer number (12783101184).

Almost surely, 2^204021144102 is an apocalyptic number.

204021144102 is an abundant number, since it is smaller than the sum of its proper divisors (205038093786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204021144102 is a wasteful number, since it uses less digits than its factorization.

204021144102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50124.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 204021144102 its reverse (201441120402), we get a palindrome (405462264504).

The spelling of 204021144102 in words is "two hundred four billion, twenty-one million, one hundred forty-four thousand, one hundred two".