1121211121122 has 48 divisors (see below), whose sum is σ = 2668328544960. Its totient is φ = 338672464416.

The previous prime is 1121211121091. The next prime is 1121211121127. The reversal of 1121211121122 is 2211211121211.

It is a happy number.

It is a super-2 number, since 2×1121211121122² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a junction number, because it is equal to n+sod(n) for n = 1121211121095 and 1121211121104.

It is not an unprimeable number, because it can be changed into a prime (1121211121127) 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, 71261593 + ... + 71277324.

It is an arithmetic number, because the mean of its divisors is an integer number (55590178020).

Almost surely, 2^{1121211121122} is an apocalyptic number.

1121211121122 is an abundant number, since it is smaller than the sum of its proper divisors (1547117423838).

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

1121211121122 is a wasteful number, since it uses less digits than its factorization.

1121211121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142538967 (or 142538964 counting only the distinct ones).

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

Adding to 1121211121122 its reverse (2211211121211), we get a palindrome (3332422242333).

The spelling of 1121211121122 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-two".