204212121212402 has 4 divisors (see below), whose sum is σ = 306318181818606. Its totient is φ = 102106060606200.

The previous prime is 204212121212339. The next prime is 204212121212479.

204212121212402 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in only one way, i.e., 190034192813521 + 14177928398881 = 13785289^2 + 3765359^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51053030303099 + ... + 51053030303102.

Almost surely, 2^{204212121212402} is an apocalyptic number.

204212121212402 is a deficient number, since it is larger than the sum of its proper divisors (102106060606204).

204212121212402 is a wasteful number, since it uses less digits than its factorization.

204212121212402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102106060606203.

The product of its (nonzero) digits is 2048, while the sum is 26.

The spelling of 204212121212402 in words is "two hundred four trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, four hundred two".