1202623121 has 6 divisors (see below), whose sum is σ = 1398969810. Its totient is φ = 1030819776.

The previous prime is 1202623109. The next prime is 1202623139. The reversal of 1202623121 is 1213262021.

It can be written as a sum of positive squares in only one way, i.e., 1201592896 + 1030225 = 34664^2 + 1015^2 .

It is not a de Polignac number, because 1202623121 - 2³⁰ = 128881297 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1202623093 and 1202623102.

It is not an unprimeable number, because it can be changed into a prime (1202623141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12271616 + ... + 12271713.

It is an arithmetic number, because the mean of its divisors is an integer number (233161635).

Almost surely, 2^1202623121 is an apocalyptic number.

It is an amenable number.

1202623121 is a deficient number, since it is larger than the sum of its proper divisors (196346689).

1202623121 is an equidigital number, since it uses as much as digits as its factorization.

1202623121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24543343 (or 24543336 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1202623121 is about 34678.8569736662. The cubic root of 1202623121 is about 1063.4323062347.

Adding to 1202623121 its reverse (1213262021), we get a palindrome (2415885142).

The spelling of 1202623121 in words is "one billion, two hundred two million, six hundred twenty-three thousand, one hundred twenty-one".