1222222101 has 32 divisors (see below), whose sum is σ = 1735198080. Its totient is φ = 763084800.

The previous prime is 1222222097. The next prime is 1222222103. The reversal of 1222222101 is 1012222221.

It is not a de Polignac number, because 1222222101 - 2² = 1222222097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222222103) 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 31 ways as a sum of consecutive naturals, for example, 2651011 + ... + 2651471.

It is an arithmetic number, because the mean of its divisors is an integer number (54224940).

Almost surely, 2^1222222101 is an apocalyptic number.

It is an amenable number.

1222222101 is a deficient number, since it is larger than the sum of its proper divisors (512975979).

1222222101 is a wasteful number, since it uses less digits than its factorization.

1222222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1222222101 is about 34960.2932052922. The cubic root of 1222222101 is about 1069.1780746509.

Adding to 1222222101 its reverse (1012222221), we get a palindrome (2234444322).

The spelling of 1222222101 in words is "one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred one".