1221401314 has 16 divisors (see below), whose sum is σ = 2138381568. Its totient is φ = 512320032.

The previous prime is 1221401287. The next prime is 1221401327. The reversal of 1221401314 is 4131041221.

It is a junction number, because it is equal to n+sod(n) for n = 1221401291 and 1221401300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927459 + ... + 928774.

It is an arithmetic number, because the mean of its divisors is an integer number (133648848).

Almost surely, 2^1221401314 is an apocalyptic number.

1221401314 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1221401314 is a deficient number, since it is larger than the sum of its proper divisors (916980254).

1221401314 is a wasteful number, since it uses less digits than its factorization.

1221401314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856289.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1221401314 is about 34948.5523877599. The cubic root of 1221401314 is about 1068.9386844503.

Adding to 1221401314 its reverse (4131041221), we get a palindrome (5352442535).

The spelling of 1221401314 in words is "one billion, two hundred twenty-one million, four hundred one thousand, three hundred fourteen".