1211022222 has 8 divisors (see below), whose sum is σ = 2422044456. Its totient is φ = 403674072.

The previous prime is 1211022193. The next prime is 1211022229. The reversal of 1211022222 is 2222201121.

It is a sphenic number, since it is the product of 3 distinct primes.

1211022222 is an admirable number.

1211022222 is a modest number, since divided by 22222 gives 12110 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211022229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100918513 + ... + 100918524.

It is an arithmetic number, because the mean of its divisors is an integer number (302755557).

Almost surely, 2^1211022222 is an apocalyptic number.

1211022222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211022222 is a wasteful number, since it uses less digits than its factorization.

1211022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201837042.

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

The square root of 1211022222 is about 34799.7445680281. The cubic root of 1211022222 is about 1065.9022300028.

Adding to 1211022222 its reverse (2222201121), we get a palindrome (3433223343).

The spelling of 1211022222 in words is "one billion, two hundred eleven million, twenty-two thousand, two hundred twenty-two".