1120221212121 has 64 divisors (see below), whose sum is σ = 1840461004800. Its totient is φ = 667717948800.

The previous prime is 1120221212119. The next prime is 1120221212167. The reversal of 1120221212121 is 1212121220211.

1120221212121 is a `hidden beast` number, since 112 + 0 + 221 + 212 + 121 = 666.

It is not a de Polignac number, because 1120221212121 - 2¹ = 1120221212119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120221212094 and 1120221212103.

It is not an unprimeable number, because it can be changed into a prime (1120221212221) 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 63 ways as a sum of consecutive naturals, for example, 8559640 + ... + 8689526.

It is an arithmetic number, because the mean of its divisors is an integer number (28757203200).

Almost surely, 2^{1120221212121} is an apocalyptic number.

1120221212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1120221212121 is a deficient number, since it is larger than the sum of its proper divisors (720239792679).

1120221212121 is a wasteful number, since it uses less digits than its factorization.

1120221212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130387 (or 130381 counting only the distinct ones).

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

Adding to 1120221212121 its reverse (1212121220211), we get a palindrome (2332342432332).

The spelling of 1120221212121 in words is "one trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty-one".