1121002000221 has 8 divisors (see below), whose sum is σ = 1498742003584. Its totient is φ = 745298331840.

The previous prime is 1121002000219. The next prime is 1121002000267. The reversal of 1121002000221 is 1220002001211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121002000221 - 2¹ = 1121002000219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121002000197 and 1121002000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121002000201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509082460 + ... + 509084661.

It is an arithmetic number, because the mean of its divisors is an integer number (187342750448).

Almost surely, 2^{1121002000221} is an apocalyptic number.

It is an amenable number.

1121002000221 is a deficient number, since it is larger than the sum of its proper divisors (377740003363).

1121002000221 is a wasteful number, since it uses less digits than its factorization.

1121002000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018167491.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1121002000221 its reverse (1220002001211), we get a palindrome (2341004001432).

The spelling of 1121002000221 in words is "one trillion, one hundred twenty-one billion, two million, two hundred twenty-one", and thus it is an aban number.