1222513401 has 16 divisors (see below), whose sum is σ = 1729007424. Its totient is φ = 765686784.

The previous prime is 1222513379. The next prime is 1222513417. The reversal of 1222513401 is 1043152221.

1222513401 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1222513401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222513301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7425 + ... + 50001.

It is an arithmetic number, because the mean of its divisors is an integer number (108062964).

Almost surely, 2^1222513401 is an apocalyptic number.

It is an amenable number.

1222513401 is a deficient number, since it is larger than the sum of its proper divisors (506494023).

1222513401 is a wasteful number, since it uses less digits than its factorization.

1222513401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43160.

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

The square root of 1222513401 is about 34964.4591120755. The cubic root of 1222513401 is about 1069.2630092502.

Adding to 1222513401 its reverse (1043152221), we get a palindrome (2265665622).

The spelling of 1222513401 in words is "one billion, two hundred twenty-two million, five hundred thirteen thousand, four hundred one".