1222213101 has 16 divisors (see below), whose sum is σ = 1648582848. Its totient is φ = 805376000.

The previous prime is 1222213093. The next prime is 1222213117. The reversal of 1222213101 is 1013122221.

It is a cyclic number.

It is not a de Polignac number, because 1222213101 - 2³ = 1222213093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222213301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94951 + ... + 107051.

It is an arithmetic number, because the mean of its divisors is an integer number (103036428).

Almost surely, 2^1222213101 is an apocalyptic number.

It is an amenable number.

1222213101 is a deficient number, since it is larger than the sum of its proper divisors (426369747).

1222213101 is a wasteful number, since it uses less digits than its factorization.

1222213101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12492.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1222213101 is about 34960.1644875993. The cubic root of 1222213101 is about 1069.1754502980.

Adding to 1222213101 its reverse (1013122221), we get a palindrome (2235335322).

The spelling of 1222213101 in words is "one billion, two hundred twenty-two million, two hundred thirteen thousand, one hundred one".