1102120321 has 4 divisors (see below), whose sum is σ = 1140124500. Its totient is φ = 1064116144.

The previous prime is 1102120267. The next prime is 1102120337. The reversal of 1102120321 is 1230212011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 546858225 + 555262096 = 23385^2 + 23564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102120321 is a prime.

It is a super-2 number, since 2×1102120321² = 2429338403922286082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102120361) 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, 19002046 + ... + 19002103.

It is an arithmetic number, because the mean of its divisors is an integer number (285031125).

Almost surely, 2^1102120321 is an apocalyptic number.

It is an amenable number.

1102120321 is a deficient number, since it is larger than the sum of its proper divisors (38004179).

1102120321 is an equidigital number, since it uses as much as digits as its factorization.

1102120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38004178.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1102120321 is about 33198.1975564939. The cubic root of 1102120321 is about 1032.9429519358.

Adding to 1102120321 its reverse (1230212011), we get a palindrome (2332332332).

The spelling of 1102120321 in words is "one billion, one hundred two million, one hundred twenty thousand, three hundred twenty-one".