1221402213314 has 4 divisors (see below), whose sum is σ = 1832103319974. Its totient is φ = 610701106656.

The previous prime is 1221402213301. The next prime is 1221402213331. The reversal of 1221402213314 is 4133122041221.

It is a happy number.

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., 1221318947689 + 83265625 = 1105133^2 + 9125^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305350553327 + ... + 305350553330.

Almost surely, 2^{1221402213314} is an apocalyptic number.

1221402213314 is a deficient number, since it is larger than the sum of its proper divisors (610701106660).

1221402213314 is an equidigital number, since it uses as much as digits as its factorization.

1221402213314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610701106659.

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

Adding to 1221402213314 its reverse (4133122041221), we get a palindrome (5354524254535).

The spelling of 1221402213314 in words is "one trillion, two hundred twenty-one billion, four hundred two million, two hundred thirteen thousand, three hundred fourteen".