1212012330 has 64 divisors (see below), whose sum is σ = 3016735488. Its totient is φ = 311385600.

The previous prime is 1212012313. The next prime is 1212012343. The reversal of 1212012330 is 332102121.

1212012330 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109030 + ... + 119630.

It is an arithmetic number, because the mean of its divisors is an integer number (47136492).

Almost surely, 2^1212012330 is an apocalyptic number.

1212012330 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 1212012330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508367744).

1212012330 is an abundant number, since it is smaller than the sum of its proper divisors (1804723158).

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

1212012330 is a wasteful number, since it uses less digits than its factorization.

1212012330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10751.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1212012330 is about 34813.9674556061. The cubic root of 1212012330 is about 1066.1926377876.

Adding to 1212012330 its reverse (332102121), we get a palindrome (1544114451).

The spelling of 1212012330 in words is "one billion, two hundred twelve million, twelve thousand, three hundred thirty".