1213120212 has 24 divisors (see below), whose sum is σ = 2831322816. Its totient is φ = 404272128.

The previous prime is 1213120193. The next prime is 1213120247. The reversal of 1213120212 is 2120213121.

1213120212 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1213120191 and 1213120200.

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, 49428 + ... + 69780.

It is an arithmetic number, because the mean of its divisors is an integer number (117971784).

Almost surely, 2^1213120212 is an apocalyptic number.

1213120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213120212 is an abundant number, since it is smaller than the sum of its proper divisors (1618202604).

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

1213120212 is a wasteful number, since it uses less digits than its factorization.

1213120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25327 (or 25325 counting only the distinct ones).

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

The square root of 1213120212 is about 34829.8752797078. The cubic root of 1213120212 is about 1066.5174023341.

Adding to 1213120212 its reverse (2120213121), we get a palindrome (3333333333).

The spelling of 1213120212 in words is "one billion, two hundred thirteen million, one hundred twenty thousand, two hundred twelve".