1213212310 has 16 divisors (see below), whose sum is σ = 2312240256. Its totient is φ = 456738688.

The previous prime is 1213212289. The next prime is 1213212323. The reversal of 1213212310 is 132123121.

It is a super-2 number, since 2×1213212310² = 2943768218271072200, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3568102 + ... + 3568441.

It is an arithmetic number, because the mean of its divisors is an integer number (144515016).

Almost surely, 2^1213212310 is an apocalyptic number.

1213212310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213212310 is a deficient number, since it is larger than the sum of its proper divisors (1099027946).

1213212310 is a wasteful number, since it uses less digits than its factorization.

1213212310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136567.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1213212310 is about 34831.1973667286. The cubic root of 1213212310 is about 1066.5443910401.

Adding to 1213212310 its reverse (132123121), we get a palindrome (1345335431).

It can be divided in two parts, 12132 and 12310, that added together give a palindrome (24442).

The spelling of 1213212310 in words is "one billion, two hundred thirteen million, two hundred twelve thousand, three hundred ten".