1121011011221 has 16 divisors (see below), whose sum is σ = 1155619432128. Its totient is φ = 1086751209600.

The previous prime is 1121011011193. The next prime is 1121011011227. The reversal of 1121011011221 is 1221101101211.

It is a cyclic number.

It is not a de Polignac number, because 1121011011221 - 2⁶ = 1121011011157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121011011196 and 1121011011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121011011227) 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 15 ways as a sum of consecutive naturals, for example, 43740791 + ... + 43766411.

It is an arithmetic number, because the mean of its divisors is an integer number (72226214508).

Almost surely, 2^{1121011011221} is an apocalyptic number.

It is an amenable number.

1121011011221 is a deficient number, since it is larger than the sum of its proper divisors (34608420907).

1121011011221 is a wasteful number, since it uses less digits than its factorization.

1121011011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32372.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121011011221 its reverse (1221101101211), we get a palindrome (2342112112432).

The spelling of 1121011011221 in words is "one trillion, one hundred twenty-one billion, eleven million, eleven thousand, two hundred twenty-one".