2002121012 has 12 divisors (see below), whose sum is σ = 3521867076. Its totient is φ = 995873280.

The previous prime is 2002121003. The next prime is 2002121021. The reversal of 2002121012 is 2101212002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2002121003) and next prime (2002121021).

It can be written as a sum of positive squares in 2 ways, for example, as 740166436 + 1261954576 = 27206^2 + 35524^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2002120984 and 2002121002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1295939 + ... + 1297482.

It is an arithmetic number, because the mean of its divisors is an integer number (293488923).

Almost surely, 2^2002121012 is an apocalyptic number.

It is an amenable number.

2002121012 is a deficient number, since it is larger than the sum of its proper divisors (1519746064).

2002121012 is a wasteful number, since it uses less digits than its factorization.

2002121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593618 (or 2593616 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2002121012 is about 44745.0669012797. The cubic root of 2002121012 is about 1260.3662771542.

Adding to 2002121012 its reverse (2101212002), we get a palindrome (4103333014).

It can be divided in two parts, 200 and 2121012, that added together give a palindrome (2121212).

The spelling of 2002121012 in words is "two billion, two million, one hundred twenty-one thousand, twelve".