1212433530 has 64 divisors (see below), whose sum is σ = 3627859968. Its totient is φ = 251933760.

The previous prime is 1212433517. The next prime is 1212433543. The reversal of 1212433530 is 353342121.

It is an interprime number because it is at equal distance from previous prime (1212433517) and next prime (1212433543).

It is a self number, because there is not a number n which added to its sum of digits gives 1212433530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260122 + ... + 264741.

It is an arithmetic number, because the mean of its divisors is an integer number (56685312).

Almost surely, 2^1212433530 is an apocalyptic number.

1212433530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212433530 is an abundant number, since it is smaller than the sum of its proper divisors (2415426438).

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

1212433530 is a wasteful number, since it uses less digits than its factorization.

1212433530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524891.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1212433530 is about 34820.0162263029. The cubic root of 1212433530 is about 1066.3161316708.

Adding to 1212433530 its reverse (353342121), we get a palindrome (1565775651).

It can be divided in two parts, 12124 and 33530, that added together give a palindrome (45654).

The spelling of 1212433530 in words is "one billion, two hundred twelve million, four hundred thirty-three thousand, five hundred thirty".