1212211122 has 32 divisors (see below), whose sum is σ = 2478643200. Its totient is φ = 395052048.

The previous prime is 1212211111. The next prime is 1212211141. The reversal of 1212211122 is 2211122121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370329 + ... + 373587.

It is an arithmetic number, because the mean of its divisors is an integer number (77457600).

Almost surely, 2^1212211122 is an apocalyptic number.

1212211122 is an abundant number, since it is smaller than the sum of its proper divisors (1266432078).

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

1212211122 is a wasteful number, since it uses less digits than its factorization.

1212211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630.

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

The square root of 1212211122 is about 34816.8223995241. The cubic root of 1212211122 is about 1066.2509262430.

Adding to 1212211122 its reverse (2211122121), we get a palindrome (3423333243).

It can be divided in two parts, 121 and 2211122, that multiplied together give a palindrome (267545762).

The spelling of 1212211122 in words is "one billion, two hundred twelve million, two hundred eleven thousand, one hundred twenty-two".