1121002010221 has 4 divisors (see below), whose sum is σ = 1121859702432. Its totient is φ = 1120144318012.

The previous prime is 1121002010209. The next prime is 1121002010231. The reversal of 1121002010221 is 1220102001211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121002010221 - 2¹¹ = 1121002008173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121002010231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428844145 + ... + 428846758.

It is an arithmetic number, because the mean of its divisors is an integer number (280464925608).

Almost surely, 2^{1121002010221} is an apocalyptic number.

It is an amenable number.

1121002010221 is a deficient number, since it is larger than the sum of its proper divisors (857692211).

1121002010221 is an equidigital number, since it uses as much as digits as its factorization.

1121002010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857692210.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121002010221 its reverse (1220102001211), we get a palindrome (2341104011432).

The spelling of 1121002010221 in words is "one trillion, one hundred twenty-one billion, two million, ten thousand, two hundred twenty-one".