1102021121321 has 4 divisors (see below), whose sum is σ = 1102550178192. Its totient is φ = 1101492064452.

The previous prime is 1102021121291. The next prime is 1102021121323. The reversal of 1102021121321 is 1231211202011.

It is a happy number.

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 1102021121321 - 2¹⁴ = 1102021104937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1102021121321.

It is not an unprimeable number, because it can be changed into a prime (1102021121323) 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 3 ways as a sum of consecutive naturals, for example, 264525311 + ... + 264529476.

It is an arithmetic number, because the mean of its divisors is an integer number (275637544548).

Almost surely, 2^{1102021121321} is an apocalyptic number.

It is an amenable number.

1102021121321 is a deficient number, since it is larger than the sum of its proper divisors (529056871).

1102021121321 is an equidigital number, since it uses as much as digits as its factorization.

1102021121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529056870.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1102021121321 its reverse (1231211202011), we get a palindrome (2333232323332).

The spelling of 1102021121321 in words is "one trillion, one hundred two billion, twenty-one million, one hundred twenty-one thousand, three hundred twenty-one".