1213012212 has 24 divisors (see below), whose sum is σ = 2979328800. Its totient is φ = 383056416.

The previous prime is 1213012189. The next prime is 1213012223. The reversal of 1213012212 is 2122103121.

It is a super-2 number, since 2×1213012212² = 2942797252922265888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213012191 and 1213012200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2659887 + ... + 2660342.

It is an arithmetic number, because the mean of its divisors is an integer number (124138700).

Almost surely, 2^1213012212 is an apocalyptic number.

1213012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213012212 is an abundant number, since it is smaller than the sum of its proper divisors (1766316588).

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

1213012212 is a wasteful number, since it uses less digits than its factorization.

1213012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320255 (or 5320253 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1213012212 is about 34828.3248520511. The cubic root of 1213012212 is about 1066.4857519127.

Adding to 1213012212 its reverse (2122103121), we get a palindrome (3335115333).

Subtracting 1213012212 from its reverse (2122103121), we obtain a palindrome (909090909).

It can be divided in two parts, 12130 and 12212, that added together give a palindrome (24342).

The spelling of 1213012212 in words is "one billion, two hundred thirteen million, twelve thousand, two hundred twelve".