1222111101 has 16 divisors (see below), whose sum is σ = 1644965888. Its totient is φ = 807030000.

The previous prime is 1222111097. The next prime is 1222111117. The reversal of 1222111101 is 1011112221.

It is not a de Polignac number, because 1222111101 - 2² = 1222111097 is a prime.

It is a super-4 number, since 4×1222111101⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222111151) 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, 162576 + ... + 169926.

It is an arithmetic number, because the mean of its divisors is an integer number (102810368).

Almost surely, 2^1222111101 is an apocalyptic number.

It is an amenable number.

1222111101 is a deficient number, since it is larger than the sum of its proper divisors (422854787).

1222111101 is a wasteful number, since it uses less digits than its factorization.

1222111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1222111101 is about 34958.7056539569. The cubic root of 1222111101 is about 1069.1457067316.

Adding to 1222111101 its reverse (1011112221), we get a palindrome (2233223322).

The spelling of 1222111101 in words is "one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred one".