1121102122221 has 40 divisors (see below), whose sum is σ = 1710719961984. Its totient is φ = 731347626240.

The previous prime is 1121102122181. The next prime is 1121102122253. The reversal of 1121102122221 is 1222212011211.

It is not a de Polignac number, because 1121102122221 - 2⁶ = 1121102122157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121102122194 and 1121102122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120102122221) 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 39 ways as a sum of consecutive naturals, for example, 20076886 + ... + 20132648.

Almost surely, 2^{1121102122221} is an apocalyptic number.

It is an amenable number.

1121102122221 is a deficient number, since it is larger than the sum of its proper divisors (589617839763).

1121102122221 is an equidigital number, since it uses as much as digits as its factorization.

1121102122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61103 (or 61094 counting only the distinct ones).

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

Adding to 1121102122221 its reverse (1222212011211), we get a palindrome (2343314133432).

The spelling of 1121102122221 in words is "one trillion, one hundred twenty-one billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-one".