1122112121211 has 32 divisors (see below), whose sum is σ = 1664410176000. Its totient is φ = 747165523104.

The previous prime is 1122112121203. The next prime is 1122112121257. The reversal of 1122112121211 is 1121212112211.

It is a happy number.

It is not a de Polignac number, because 1122112121211 - 2³ = 1122112121203 is a prime.

It is a super-2 number, since 2×1122112121211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1122112121411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84305625 + ... + 84318933.

It is an arithmetic number, because the mean of its divisors is an integer number (52012818000).

Almost surely, 2^{1122112121211} is an apocalyptic number.

1122112121211 is a deficient number, since it is larger than the sum of its proper divisors (542298054789).

1122112121211 is a wasteful number, since it uses less digits than its factorization.

1122112121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16880 (or 16874 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 1122112121211 its reverse (1121212112211), we get a palindrome (2243324233422).

The spelling of 1122112121211 in words is "one trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, two hundred eleven".