1222401 has 8 divisors (see below), whose sum is σ = 1636864. Its totient is φ = 811440.

The previous prime is 1222393. The next prime is 1222409. The reversal of 1222401 is 1042221.

1222401 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (1222393) and next prime (1222409).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222401 - 2³ = 1222393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96 + ... + 1566.

It is an arithmetic number, because the mean of its divisors is an integer number (204608).

2^1222401 is an apocalyptic number.

It is an amenable number.

1222401 is a deficient number, since it is larger than the sum of its proper divisors (414463).

1222401 is a wasteful number, since it uses less digits than its factorization.

1222401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1222401 is about 1105.6224491209. The cubic root of 1222401 is about 106.9230237990.

Adding to 1222401 its reverse (1042221), we get a palindrome (2264622).

The spelling of 1222401 in words is "one million, two hundred twenty-two thousand, four hundred one".