1212101212 has 24 divisors (see below), whose sum is σ = 2427951456. Its totient is φ = 518668608.

The previous prime is 1212101201. The next prime is 1212101237. The reversal of 1212101212 is 2121012121.

1212101212 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1212101192 and 1212101201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14863 + ... + 51430.

It is an arithmetic number, because the mean of its divisors is an integer number (101164644).

Almost surely, 2^1212101212 is an apocalyptic number.

It is an amenable number.

1212101212 is an abundant number, since it is smaller than the sum of its proper divisors (1215850244).

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

1212101212 is a wasteful number, since it uses less digits than its factorization.

1212101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66957 (or 66955 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1212101212 is about 34815.2439600816. The cubic root of 1212101212 is about 1066.2186999585.

Adding to 1212101212 its reverse (2121012121), we get a palindrome (3333113333).

The spelling of 1212101212 in words is "one billion, two hundred twelve million, one hundred one thousand, two hundred twelve".