1012002121012 has 48 divisors (see below), whose sum is σ = 1823515854160. Its totient is φ = 491068956672.

The previous prime is 1012002121003. The next prime is 1012002121043. The reversal of 1012002121012 is 2101212002101.

It can be written as a sum of positive squares in 8 ways, for example, as 28168251556 + 983833869456 = 167834^2 + 991884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1012002120983 and 1012002121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122026738 + ... + 122035030.

Almost surely, 2^{1012002121012} is an apocalyptic number.

It is an amenable number.

1012002121012 is a deficient number, since it is larger than the sum of its proper divisors (811513733148).

1012002121012 is a wasteful number, since it uses less digits than its factorization.

1012002121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340 (or 10338 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012002121012 its reverse (2101212002101), we get a palindrome (3113214123113).

The spelling of 1012002121012 in words is "one trillion, twelve billion, two million, one hundred twenty-one thousand, twelve".