1214622401 has 4 divisors (see below), whose sum is σ = 1221333204. Its totient is φ = 1207911600.

The previous prime is 1214622391. The next prime is 1214622403. The reversal of 1214622401 is 1042264121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1042264121 = 347 ⋅3003643.

It can be written as a sum of positive squares in 2 ways, for example, as 144024001 + 1070598400 = 12001^2 + 32720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214622401 is a prime.

It is a super-2 number, since 2×1214622401² = 2950615154022009602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214622403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3355130 + ... + 3355491.

It is an arithmetic number, because the mean of its divisors is an integer number (305333301).

Almost surely, 2^1214622401 is an apocalyptic number.

It is an amenable number.

1214622401 is a deficient number, since it is larger than the sum of its proper divisors (6710803).

1214622401 is an equidigital number, since it uses as much as digits as its factorization.

1214622401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710802.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1214622401 is about 34851.4332703836. The cubic root of 1214622401 is about 1066.9574383829.

Adding to 1214622401 its reverse (1042264121), we get a palindrome (2256886522).

The spelling of 1214622401 in words is "one billion, two hundred fourteen million, six hundred twenty-two thousand, four hundred one".