2010001202021 has 4 divisors (see below), whose sum is σ = 2011019957772. Its totient is φ = 2008982446272.

The previous prime is 2010001202017. The next prime is 2010001202051. The reversal of 2010001202021 is 1202021000102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1100161840996 + 909839361025 = 1048886^2 + 953855^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010001202021 - 2² = 2010001202017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010001201993 and 2010001202011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010001202051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509374916 + ... + 509378861.

It is an arithmetic number, because the mean of its divisors is an integer number (502754989443).

Almost surely, 2^{2010001202021} is an apocalyptic number.

It is an amenable number.

2010001202021 is a deficient number, since it is larger than the sum of its proper divisors (1018755751).

2010001202021 is a wasteful number, since it uses less digits than its factorization.

2010001202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018755750.

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

Adding to 2010001202021 its reverse (1202021000102), we get a palindrome (3212022202123).

The spelling of 2010001202021 in words is "two trillion, ten billion, one million, two hundred two thousand, twenty-one".