1222100222 has 16 divisors (see below), whose sum is σ = 2095532640. Its totient is φ = 523631328.

The previous prime is 1222100221. The next prime is 1222100237. The reversal of 1222100222 is 2220012221.

It is a super-2 number, since 2×1222100222² = 2987057905224898568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1222100197 and 1222100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72404 + ... + 87672.

It is an arithmetic number, because the mean of its divisors is an integer number (130970790).

Almost surely, 2^1222100222 is an apocalyptic number.

1222100222 is a deficient number, since it is larger than the sum of its proper divisors (873432418).

1222100222 is a wasteful number, since it uses less digits than its factorization.

1222100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20995.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1222100222 is about 34958.5500557446. The cubic root of 1222100222 is about 1069.1425342784.

Adding to 1222100222 its reverse (2220012221), we get a palindrome (3442112443).

The spelling of 1222100222 in words is "one billion, two hundred twenty-two million, one hundred thousand, two hundred twenty-two".