1223020101 has 32 divisors (see below), whose sum is σ = 1795415040. Its totient is φ = 737092224.

The previous prime is 1223020039. The next prime is 1223020157. The reversal of 1223020101 is 1010203221.

It is not a de Polignac number, because 1223020101 - 2¹¹ = 1223018053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223020301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 737265 + ... + 738921.

It is an arithmetic number, because the mean of its divisors is an integer number (56106720).

Almost surely, 2^1223020101 is an apocalyptic number.

It is an amenable number.

1223020101 is a deficient number, since it is larger than the sum of its proper divisors (572394939).

1223020101 is a wasteful number, since it uses less digits than its factorization.

1223020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1223020101 is about 34971.7042907548. The cubic root of 1223020101 is about 1069.4107160784.

Adding to 1223020101 its reverse (1010203221), we get a palindrome (2233223322).

The spelling of 1223020101 in words is "one billion, two hundred twenty-three million, twenty thousand, one hundred one".