1213225401 has 8 divisors (see below), whose sum is σ = 1644152704. Its totient is φ = 795557520.

The previous prime is 1213225379. The next prime is 1213225427. The reversal of 1213225401 is 1045223121.

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

It is not a de Polignac number, because 1213225401 - 2⁶ = 1213225337 is a prime.

It is a super-2 number, since 2×1213225401² = 2943831747263221602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213225801) 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 7 ways as a sum of consecutive naturals, for example, 3314641 + ... + 3315006.

It is an arithmetic number, because the mean of its divisors is an integer number (205519088).

Almost surely, 2^1213225401 is an apocalyptic number.

It is an amenable number.

1213225401 is a deficient number, since it is larger than the sum of its proper divisors (430927303).

1213225401 is an equidigital number, since it uses as much as digits as its factorization.

1213225401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6629711.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1213225401 is about 34831.3852868358. The cubic root of 1213225401 is about 1066.5482271596.

Adding to 1213225401 its reverse (1045223121), we get a palindrome (2258448522).

The spelling of 1213225401 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, four hundred one".