1212212104 has 16 divisors (see below), whose sum is σ = 2296331100. Its totient is φ = 599857152.

The previous prime is 1212212101. The next prime is 1212212119. The reversal of 1212212104 is 4012122121.

It can be written as a sum of positive squares in 2 ways, for example, as 1178548900 + 33663204 = 34330^2 + 5802^2 .

It is not an unprimeable number, because it can be changed into a prime (1212212101) 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, 780289 + ... + 781840.

Almost surely, 2^1212212104 is an apocalyptic number.

It is an amenable number.

1212212104 is a deficient number, since it is larger than the sum of its proper divisors (1084118996).

1212212104 is a wasteful number, since it uses less digits than its factorization.

1212212104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562232 (or 1562228 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1212212104 is about 34816.8365018995. The cubic root of 1212212104 is about 1066.2512141626.

Adding to 1212212104 its reverse (4012122121), we get a palindrome (5224334225).

The spelling of 1212212104 in words is "one billion, two hundred twelve million, two hundred twelve thousand, one hundred four".