212121102303304 has 8 divisors (see below), whose sum is σ = 397727066818710. Its totient is φ = 106060551151648.

The previous prime is 212121102303293. The next prime is 212121102303379. The reversal of 212121102303304 is 403303201121212.

It can be written as a sum of positive squares in only one way, i.e., 173641287999204 + 38479814304100 = 13177302^2 + 6203210^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×212121102303304³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13257568893949 + ... + 13257568893964.

Almost surely, 2^{212121102303304} is an apocalyptic number.

It is an amenable number.

212121102303304 is a deficient number, since it is larger than the sum of its proper divisors (185605964515406).

212121102303304 is a wasteful number, since it uses less digits than its factorization.

212121102303304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26515137787919 (or 26515137787915 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 212121102303304 its reverse (403303201121212), we get a palindrome (615424303424516).

The spelling of 212121102303304 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred two million, three hundred three thousand, three hundred four".