1212012030 has 48 divisors (see below), whose sum is σ = 2972198160. Its totient is φ = 316309248.

The previous prime is 1212012017. The next prime is 1212012031. The reversal of 1212012030 is 302102121.

It is a junction number, because it is equal to n+sod(n) for n = 1212011997 and 1212012015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57126 + ... + 75414.

It is an arithmetic number, because the mean of its divisors is an integer number (61920795).

Almost surely, 2^1212012030 is an apocalyptic number.

1212012030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212012030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486099080).

1212012030 is an abundant number, since it is smaller than the sum of its proper divisors (1760186130).

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

1212012030 is a wasteful number, since it uses less digits than its factorization.

1212012030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18393 (or 18346 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1212012030 is about 34813.9631469903. The cubic root of 1212012030 is about 1066.1925498188.

Adding to 1212012030 its reverse (302102121), we get a palindrome (1514114151).

Subtracting from 1212012030 its reverse (302102121), we obtain a palindrome (909909909).

The spelling of 1212012030 in words is "one billion, two hundred twelve million, twelve thousand, thirty".