1223221101 has 16 divisors (see below), whose sum is σ = 1676951808. Its totient is φ = 792633600.

The previous prime is 1223221093. The next prime is 1223221169. The reversal of 1223221101 is 1011223221.

It is not a de Polignac number, because 1223221101 - 2³ = 1223221093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223221171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14985 + ... + 51681.

It is an arithmetic number, because the mean of its divisors is an integer number (104809488).

Almost surely, 2^1223221101 is an apocalyptic number.

It is an amenable number.

1223221101 is a deficient number, since it is larger than the sum of its proper divisors (453730707).

1223221101 is a wasteful number, since it uses less digits than its factorization.

1223221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37012.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1223221101 is about 34974.5779245440. The cubic root of 1223221101 is about 1069.4692977755.

Adding to 1223221101 its reverse (1011223221), we get a palindrome (2234444322).

It can be divided in two parts, 1223221 and 101, that multiplied together give a palindrome (123545321).

The spelling of 1223221101 in words is "one billion, two hundred twenty-three million, two hundred twenty-one thousand, one hundred one".