2021012002010 has 16 divisors (see below), whose sum is σ = 3651976556136. Its totient is φ = 805259255808.

The previous prime is 2021012002001. The next prime is 2021012002021. The reversal of 2021012002010 is 102002101202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1725316401169 + 295695600841 = 1313513^2 + 543779^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2021012001982 and 2021012002000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393190427 + ... + 393195566.

Almost surely, 2^{2021012002010} is an apocalyptic number.

2021012002010 is a deficient number, since it is larger than the sum of its proper divisors (1630964554126).

2021012002010 is a wasteful number, since it uses less digits than its factorization.

2021012002010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786386257.

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

Adding to 2021012002010 its reverse (102002101202), we get a palindrome (2123014103212).

The spelling of 2021012002010 in words is "two trillion, twenty-one billion, twelve million, two thousand, ten".