1323220101 has 64 divisors (see below), whose sum is σ = 2131992576. Its totient is φ = 714355200.

The previous prime is 1323220099. The next prime is 1323220121. The reversal of 1323220101 is 1010223231.

It is not a de Polignac number, because 1323220101 - 2¹ = 1323220099 is a prime.

It is a super-2 number, since 2×1323220101² = 3501822871380900402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323220121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4882596 + ... + 4882866.

It is an arithmetic number, because the mean of its divisors is an integer number (33312384).

Almost surely, 2^1323220101 is an apocalyptic number.

It is an amenable number.

1323220101 is a deficient number, since it is larger than the sum of its proper divisors (808772475).

1323220101 is a wasteful number, since it uses less digits than its factorization.

1323220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1323220101 is about 36376.0924372039. The cubic root of 1323220101 is about 1097.8525876997.

Adding to 1323220101 its reverse (1010223231), we get a palindrome (2333443332).

It can be divided in two parts, 13232 and 20101, that added together give a palindrome (33333).

The spelling of 1323220101 in words is "one billion, three hundred twenty-three million, two hundred twenty thousand, one hundred one".