1122121222011 has 12 divisors (see below), whose sum is σ = 1620862149192. Its totient is φ = 748071406656.

The previous prime is 1122121222007. The next prime is 1122121222031. The reversal of 1122121222011 is 1102221212211.

1122121222011 is a `hidden beast` number, since 1 + 1 + 221 + 212 + 220 + 11 = 666.

It is not a de Polignac number, because 1122121222011 - 2² = 1122121222007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122121222031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14160 + ... + 1498146.

It is an arithmetic number, because the mean of its divisors is an integer number (135071845766).

Almost surely, 2^{1122121222011} is an apocalyptic number.

1122121222011 is a deficient number, since it is larger than the sum of its proper divisors (498740927181).

1122121222011 is a wasteful number, since it uses less digits than its factorization.

1122121222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568010 (or 1568007 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1122121222011 its reverse (1102221212211), we get a palindrome (2224342434222).

The spelling of 1122121222011 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, eleven".