1211122122 has 48 divisors (see below), whose sum is σ = 2856362112. Its totient is φ = 341288640.

The previous prime is 1211122103. The next prime is 1211122127. The reversal of 1211122122 is 2212211121.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1211122127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6754 + ... + 49677.

It is an arithmetic number, because the mean of its divisors is an integer number (59507544).

Almost surely, 2^1211122122 is an apocalyptic number.

1211122122 is an abundant number, since it is smaller than the sum of its proper divisors (1645239990).

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

1211122122 is a wasteful number, since it uses less digits than its factorization.

1211122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56523 (or 56516 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 1211122122 is about 34801.1798937910. The cubic root of 1211122122 is about 1065.9315387700.

Adding to 1211122122 its reverse (2212211121), we get a palindrome (3423333243).

The spelling of 1211122122 in words is "one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".