1321212310 has 96 divisors (see below), whose sum is σ = 2783743200. Its totient is φ = 449856000.

The previous prime is 1321212293. The next prime is 1321212349. The reversal of 1321212310 is 132121231.

1321212310 = 3098² + 3099² + ... + 3229².

It is a super-2 number, since 2×1321212310² = 3491203936191072200, 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 (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2321706 + ... + 2322274.

It is an arithmetic number, because the mean of its divisors is an integer number (28997325).

Almost surely, 2^1321212310 is an apocalyptic number.

1321212310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321212310 is an abundant number, since it is smaller than the sum of its proper divisors (1462530890).

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

1321212310 is a wasteful number, since it uses less digits than its factorization.

1321212310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 707 counting only the distinct ones).

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

The square root of 1321212310 is about 36348.4842875188. The cubic root of 1321212310 is about 1097.2970302474.

Adding to 1321212310 its reverse (132121231), we get a palindrome (1453333541).

It can be divided in two parts, 132121 and 2310, that added together give a palindrome (134431).

The spelling of 1321212310 in words is "one billion, three hundred twenty-one million, two hundred twelve thousand, three hundred ten".