1221310440314 has 4 divisors (see below), whose sum is σ = 1831965660474. Its totient is φ = 610655220156.

The previous prime is 1221310440293. The next prime is 1221310440331. The reversal of 1221310440314 is 4130440131221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1128874375225 + 92436065089 = 1062485^2 + 304033^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305327610077 + ... + 305327610080.

Almost surely, 2^{1221310440314} is an apocalyptic number.

1221310440314 is a deficient number, since it is larger than the sum of its proper divisors (610655220160).

1221310440314 is an equidigital number, since it uses as much as digits as its factorization.

1221310440314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610655220159.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1221310440314 its reverse (4130440131221), we get a palindrome (5351750571535).

The spelling of 1221310440314 in words is "one trillion, two hundred twenty-one billion, three hundred ten million, four hundred forty thousand, three hundred fourteen".