202101210011 has 4 divisors (see below), whose sum is σ = 202200916632. Its totient is φ = 202001503392.

The previous prime is 202101209987. The next prime is 202101210023. The reversal of 202101210011 is 110012101202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110012101202 = 2 ⋅55006050601.

It is a cyclic number.

It is not a de Polignac number, because 202101210011 - 2¹⁴ = 202101193627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202101209974 and 202101210001.

It is not an unprimeable number, because it can be changed into a prime (202101210811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49850270 + ... + 49854323.

It is an arithmetic number, because the mean of its divisors is an integer number (50550229158).

Almost surely, 2^202101210011 is an apocalyptic number.

202101210011 is a deficient number, since it is larger than the sum of its proper divisors (99706621).

202101210011 is an equidigital number, since it uses as much as digits as its factorization.

202101210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99706620.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 202101210011 its reverse (110012101202), we get a palindrome (312113311213).

The spelling of 202101210011 in words is "two hundred two billion, one hundred one million, two hundred ten thousand, eleven".