1121000011221 has 16 divisors (see below), whose sum is σ = 1497910003200. Its totient is φ = 745711938048.

The previous prime is 1121000011213. The next prime is 1121000011279. The reversal of 1121000011221 is 1221100001211.

It is not a de Polignac number, because 1121000011221 - 2³ = 1121000011213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121000011197 and 1121000011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121000011721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23498425 + ... + 23546081.

It is an arithmetic number, because the mean of its divisors is an integer number (93619375200).

Almost surely, 2^{1121000011221} is an apocalyptic number.

It is an amenable number.

1121000011221 is a deficient number, since it is larger than the sum of its proper divisors (376909991979).

1121000011221 is a wasteful number, since it uses less digits than its factorization.

1121000011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64508.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1121000011221 its reverse (1221100001211), we get a palindrome (2342100012432).

The spelling of 1121000011221 in words is "one trillion, one hundred twenty-one billion, eleven thousand, two hundred twenty-one".