1232120002 has 4 divisors (see below), whose sum is σ = 1848180006. Its totient is φ = 616060000.

The previous prime is 1232119981. The next prime is 1232120003. The reversal of 1232120002 is 2000212321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2000212321 = 3593 ⋅556697.

It can be written as a sum of positive squares in only one way, i.e., 887980401 + 344139601 = 29799^2 + 18551^2 .

It is not an unprimeable number, because it can be changed into a prime (1232120003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308029999 + ... + 308030002.

Almost surely, 2^1232120002 is an apocalyptic number.

1232120002 is a deficient number, since it is larger than the sum of its proper divisors (616060004).

1232120002 is an equidigital number, since it uses as much as digits as its factorization.

1232120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616060003.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1232120002 is about 35101.5669450810. The cubic root of 1232120002 is about 1072.0564875419.

Adding to 1232120002 its reverse (2000212321), we get a palindrome (3232332323).

It can be divided in two parts, 12321 and 20002, that multiplied together give a palindrome (246444642).

The spelling of 1232120002 in words is "one billion, two hundred thirty-two million, one hundred twenty thousand, two".