204021121034 has 8 divisors (see below), whose sum is σ = 307722464868. Its totient is φ = 101446966080.

The previous prime is 204021121027. The next prime is 204021121039. The reversal of 204021121034 is 430121120402.

It can be written as a sum of positive squares in 2 ways, for example, as 202261570225 + 1759550809 = 449735^2 + 41947^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 204021120997 and 204021121015.

It is not an unprimeable number, because it can be changed into a prime (204021121039) 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, 281796767 + ... + 281797490.

Almost surely, 2^204021121034 is an apocalyptic number.

204021121034 is a deficient number, since it is larger than the sum of its proper divisors (103701343834).

204021121034 is a wasteful number, since it uses less digits than its factorization.

204021121034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563594440.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 204021121034 its reverse (430121120402), we get a palindrome (634142241436).

The spelling of 204021121034 in words is "two hundred four billion, twenty-one million, one hundred twenty-one thousand, thirty-four".