1102201221 has 12 divisors (see below), whose sum is σ = 1615347776. Its totient is φ = 668000520.

The previous prime is 1102201181. The next prime is 1102201223. The reversal of 1102201221 is 1221022011.

It is not a de Polignac number, because 1102201221 - 2⁶ = 1102201157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102201197 and 1102201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102201223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1517821 + ... + 1518546.

Almost surely, 2^1102201221 is an apocalyptic number.

1102201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1102201221 is a deficient number, since it is larger than the sum of its proper divisors (513146555).

1102201221 is a wasteful number, since it uses less digits than its factorization.

1102201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036392 (or 3036381 counting only the distinct ones).

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

The square root of 1102201221 is about 33199.4159737788. The cubic root of 1102201221 is about 1032.9682253530.

Adding to 1102201221 its reverse (1221022011), we get a palindrome (2323223232).

The spelling of 1102201221 in words is "one billion, one hundred two million, two hundred one thousand, two hundred twenty-one".