1002121312 has 12 divisors (see below), whose sum is σ = 1972926396. Its totient is φ = 501060640.

The previous prime is 1002121291. The next prime is 1002121319. The reversal of 1002121312 is 2131212001.

1002121312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1002121292 and 1002121301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002121319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15658114 + ... + 15658177.

It is an arithmetic number, because the mean of its divisors is an integer number (164410533).

Almost surely, 2^1002121312 is an apocalyptic number.

It is an amenable number.

1002121312 is a deficient number, since it is larger than the sum of its proper divisors (970805084).

1002121312 is an equidigital number, since it uses as much as digits as its factorization.

1002121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31316301 (or 31316293 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1002121312 is about 31656.2997205927. The cubic root of 1002121312 is about 1000.7066045923.

Adding to 1002121312 its reverse (2131212001), we get a palindrome (3133333313).

The spelling of 1002121312 in words is "one billion, two million, one hundred twenty-one thousand, three hundred twelve".