1212023330 has 48 divisors (see below), whose sum is σ = 2687130936. Its totient is φ = 391104000.

The previous prime is 1212023317. The next prime is 1212023339. The reversal of 1212023330 is 333202121.

It can be written as a sum of positive squares in 4 ways, for example, as 1194324481 + 17698849 = 34559^2 + 4207^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 1212023299 and 1212023308.

It is not an unprimeable number, because it can be changed into a prime (1212023339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64421 + ... + 81080.

Almost surely, 2^1212023330 is an apocalyptic number.

1212023330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212023330 is an abundant number, since it is smaller than the sum of its proper divisors (1475107606).

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

1212023330 is a wasteful number, since it uses less digits than its factorization.

1212023330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145539 (or 145532 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1212023330 is about 34814.1254378162. The cubic root of 1212023330 is about 1066.1958633003.

Adding to 1212023330 its reverse (333202121), we get a palindrome (1545225451).

The spelling of 1212023330 in words is "one billion, two hundred twelve million, twenty-three thousand, three hundred thirty".