202010020002101 has 4 divisors (see below), whose sum is σ = 202010057648652. Its totient is φ = 202009982355552.

The previous prime is 202010020002019. The next prime is 202010020002103. The reversal of 202010020002101 is 101200020010202.

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 49154135022001 + 152855884980100 = 7011001^2 + 12363490^2 .

It is a cyclic number.

It is not a de Polignac number, because 202010020002101 - 2¹⁰ = 202010020001077 is a prime.

It is a super-2 number, since 2×202010020002101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202010020002103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9100190 + ... + 22064303.

It is an arithmetic number, because the mean of its divisors is an integer number (50502514412163).

Almost surely, 2^{202010020002101} is an apocalyptic number.

It is an amenable number.

202010020002101 is a deficient number, since it is larger than the sum of its proper divisors (37646551).

202010020002101 is an equidigital number, since it uses as much as digits as its factorization.

202010020002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37646550.

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

Adding to 202010020002101 its reverse (101200020010202), we get a palindrome (303210040012303).

The spelling of 202010020002101 in words is "two hundred two trillion, ten billion, twenty million, two thousand, one hundred one".